| № |
Condition |
free/or 0.5$ |
| m67414 | Bill Heckle s last electric bill is shown below.
a. What was the previous reading?
b. What is the present reading?
c. How many kilowatt-hours of electricity did Bill use during the service period shown? d. What did Wattco charge per kilowatt-hour of electricity?
e. The bill covers 31 days of electric use. What was Bill s average daily expense for electricity for this service period? Round to the nearest cent. |
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| m67416 | Bill is looking for original taillights for his 1932 Ford. The prices vary depending on the condition. He finds these prices:
$450, $100, $180, $600, $300, $350, $300, and $400.
a. Find the four quartiles.
b. Find the interquartile range.
c. Find the boundary for the lower outliers. Are there any lower outliers?
d. Find the boundary for the upper outliers. Are there any upper outliers? |
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| m67417 | Bill works for the Stuff-It Mailing Service. He receives 25 cents for each document he puts together and prepares for mailing. Last week, Bill prepared 2,000 documents for mailing for a local department store. He received a check with gross pay of $474 and is certain that the amount is incorrect.
a. What is Bill s correct total piecework pay?
b. How much does his boss owe him? |
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| m67418 | Billy invented an innovative baseball batting glove he named the Nokee and made his own TV infomercial to sell it. The expense function for the Nokee is E = 6.21q + 125,000. The Nokee sells for $19.95.
a. Represent the average expense A for one Nokee algebraically.
b. Set your calculator viewing window to show x-values between 0 and 1,000, and y-values from 0 to 2,000. Let x represent q and let y represent A. Graph the average expense function.
c. Is the average expense function linear?
d. Is the average expense function increasing or decreasing as q increases?
e. If only one Nokee is produced, what is the average cost per Nokee to the nearest cent?
f. If 100,000 Nokees are produced, what is the average cost per Nokee to the nearest cent? |
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| m67422 | Bob can afford to deposit $400 a month into a retirement account that compounds interest monthly with an APR of 3.9%. His plan is to have $200,000 saved so that he can then retire. Approximately how long will it take him to reach this goal? |
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| m67423 | Bob Forrester is retired and owns a home. He has these assets and liabilities.
a. Calculate Bob s net worth.
b. Two years ago, Bob s net worth was $650,000. Last year, his net worth as $740,500. What is the approximate percent of increase or decrease between two years ago and last year?
c. What is the approximate percent of increase or decrease between last year and this year?
d. Compare the values. What do the changes imply? |
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| m67425 | Bonnie is purchasing an apartment for $180,000. She has been approved for a 6% mortgage. She put 10% down and will be closing on April 22. How much should she expect to pay in prepaid interest? |
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| m67431 | Brian looked up prices of thirteen used Chevrolet HHR "retro" trucks in the classified ads and found these prices: $8,500, $8,500, $8,500, $9,900, $10,800, $10,800, $11,000, $12,500, $12,500, $13,000, $13,000, $14,500, and $23,000.
a. Make a frequency table for this data set.
b. Find the mean. Round to the nearest dollar.
c. Find the median.
d. Find the mode.
e. Find the range.
f. Find the four quartiles.
g. Find the interquartile range.
h. Find the boundary for the upper outliers.
i. Find the boundary for the lower outliers.
j. How many outliers are there?
k. Draw a modified box-and-whisker plot. Label it. |
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| m67432 | Brianna just signed a lease on a rental apartment. The current rent is $1,330 per month, and she estimates a 6% increase each year. Use her estimate to predict the sum of the next five years worth of monthly rental expenses. Round to the nearest thousand dollars? |
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| m67448 | Burt Baskin and Irv Robbins began making ice cream in 1945.
Initially they developed 31 flavors-one for each day of the month. (Source: Baskin- Robbins)
a) How many 2-dip cones are possible using the 31 original flavors if order of flavors is to be considered and no flavor is repeated?
b) How many 2-dip cones are possible if order is to be considered and a flavor can be repeated?
c) How many 2-dip cones are possible if order is not considered and no flavor is repeated? |
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| m67451 | Business Bargains manufactures office supplies. It is considering selling sticky-notes in the shape of the state in which they will be sold. The expense and revenue functions are E = -250p + 50,000 and R = -225p2 + 7,200p.
a. Determine the profit function.
b. Determine the price, to the nearest cent, that yields the maximum profit.
c. Determine the maximum profit, to the nearest cent. |
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| m67456 | Businesses deposit large sums of money into bank accounts. Imagine an account with 10 million dollars in it.
a. How much would the account earn in one year of simple interest at a rate of 5.12%?
b. How much would the account earn in one year at 5.12% if the interest was compounded daily?
c. How much more interest is earned by interest compounded daily compared to simple interest? |
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| m67472 | Calculate the missing amounts in the amortization table which shows extra payments toward the principal made each month. |
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| m67475 | Calculate the tax for each of the taxable incomes of a head of house- hold taxpayer.
a. $400,000
b. $108,962
c. $201,102
d. $106,000 |
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| m67476 | Calculate the tax using the computation worksheet for a head of household taxpayer with a taxable income of $115,700? |
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| m67477 | Cambridge Metal Works manufactures two sizes of gears. The smaller gear requires 4 hr of machining and 1 hr of polishing and yields a profit of $25. The larger gear requires 1 hr of machining and 1 hr of polishing and yields a profit of $10. The firm has available at most 24 hr per day for machining and 9 hr per day for polishing. How many of each type of gear should be produced each day in order to maximize profit? What is the maximum profit? |
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| m67491 | Candaleria makes an investment at 5.2% simple interest. At the end of 1 year, the total value of the investment is $2419.60. How much was originally invested? |
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| m67495 | Carlos does his online trading with Super Trade. Super Trade s rates are listed in the table below.
a. If Carlos makes three dozen online trades in a year, what is the total of his broker fees?
b. What is the cost of 99 online trades?
c. What is the cost of 120 online trades?
d. If he makes t online trades in a year, and t > 100, express the total of his broker fees algebraically.
e. Suppose Carlos made q online trades and t automated telephone trades last year, where q + t < 100. Express the cost of all the trades algebraically.
f. Suppose Carlos makes 20 trades in a year. If Carlos purchased x shares of stock for y dollars each using a phone call to a live broker, express the total broker fee algebraically. |
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| m67496 | Carly took a $7,000, three-year loan with an APR of 8.15%.
a. What is the monthly payment?
b. What is the total amount of the monthly payments?
c. What is the finance charge? |
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| m67497 | Carmen is a teacher in the district who began working there in 1995 and will retire in 2010 after 15 years of service. In the 2007-08 school year, she made $60,000. She received a 2% cost of living pay increase to her salary for each of the last two years before she retired. Determine her monthly pension.
First 15 years of service Service in Excess of 15 years
2.12% multiplier ................................................ 2.25% multiplier
Years of service up to 15 ..................... years of service in excess of 15
Average of final 3 annual salaries .......... Average of final 3 annual salaries |
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