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1. |
Which of the following is a unit rate? |
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A. |
17 heartbeats in 15 seconds |
B. |
2 hamburgers for $2.00 |
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C. |
60 Calories per serving |
D. |
300 miles in 5 hours |
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Hint |
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2. |
Which is the best buy: $4.08 for a 16-ounce box of cereal, $4.50 for an 18-ounce box of cereal, or $5.39 for a 22-ounce box of cereal? |
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A. |
16-ounce box |
B. |
There is no best buy because they all have the same unit price. |
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C. |
22-ounce box |
D. |
18-ounce box |
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Hint |
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3. |
Rockford has a population of 234,870 people and its area is 7,829 square miles. Doleville has a population of 331,840 people and its area is 9,760 square miles. What can you conclude from each town's population density? |
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A. |
The population density in Doleville is 34 people per square mile. |
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B. |
The population density in Rockford is 30 square miles per person. |
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C. |
There are more people per square mile in Rockford than in Doleville. |
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D. |
More people live in Rockford. |
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Hint |
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4. |
About how much would you pay for a coat that normally sells for $149.99 if you pay  of its original price? |
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A. |
100 |
B. |
75 |
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C. |
50 |
D. |
25 |
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Hint |
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5. |
Julie went to the store to buy a pair of pants. The pants are normally $39.95. This week they are on sale for 25% off the regular price. What is the sale price? |
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A. |
$29.96 |
B. |
$31.96 |
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C. |
27.97 |
D. |
$30.98 |
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Hint |
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6. |
Suppose biologists tagged 53 penguins in Antarctica during mating season. The next year, they caught 82 penguins and found that 11 of them had tags. Estimate the total number of penguins in the area. |
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A. |
405 |
B. |
446 |
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C. |
353 |
D. |
395 |
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Hint |
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7. |
Of the 1,500 registered voters who were polled in the city, 46% said they would vote for Lerman for mayor and 42% said they would vote for McMahon. Suppose the number of registered voters in the city is 2 million. How many registered voters would you expect to support Lerman? |
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A. |
920,000 |
B. |
840,000 |
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C. |
630,000 |
D. |
690,000 |
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Hint |
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8. |
The price of a stock was $52.63 when the stock market opened. It rose to $61.50 when the stock market closed. Find the percent of change of the stock price during the day. |
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A. |
12.30% |
B. |
14.40% |
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C. |
16.90% |
D. |
8.90% |
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Hint |
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