Math 135 - Mathematical Ideas » Spring 2023 » Quiz 1

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Question #1
Patrick left a $12.60 tip on a $70 restaurant bill. What percent tip is that? Patrick left a ____% tip.
A.   20
B.   16
C.   18
D.   14
Question #2
The number of CDs sold was 108 million, down from 139 million the previous year. Find the relative (percent) decrease. The percent decrease was _____% (Please round your answer to the nearest tenth of a percent).
A.   24.5
B.   18.7
C.   22.3
D.   26.8
Question #3
A 10ft length of 4 inch wide crown molding costs $15. How much will it cost to buy 40ft of crown molding? The molding will cost $____.
A.   45
B.   60
C.   50
D.   55
Question #4
Sugar contains 15 calories per teaspoon. How many calories are in 1 cup of sugar? (Hint: 3 teaspoons = 1 Tablespoon and 16 Tablespoons = 1 cup) There are _____ calories in one cup of sugar.
A.   740
B.   800
C.   720
D.   820
Question #5
The store is selling lemons at 2 for $1. Each yields about 2 tablespoons of juice. How much will it cost to buy enough lemons to make a 9-inch lemon pie requiring ½ cup of lemon juice? (Hint: 16 Tablespoons = 1 cup) It will cost $ _____.
A.   5
B.   4
C.   3
D.   2
Question #6
It takes an air pump 5 minutes to fill a twin-sized air mattress (39.5 by 8.75 by 74.5 inches). Estimate how long will it take to fill a Cal king-sized mattress (72 by 8.75 by 83.5 inches)?
A.   It will take the same amount of time.
B.   It will take 6 minutes.
C.   It will take half as long.
D.   It will take twice as long.
Question #7
Convert 9.8×10−3 to standard notation.
A.   0.098
B.   0.98
C.   0.00098
D.   0.0098
Question #8
The Gross Domestic Product (GDP) for the United States in the first quarter of 2014 was $1.71496×1013. Rewrite the GDP in standard notation.
A.   171,496,000
B.   1,714,960,000,000
C.   17,149,600,000
D.   17,149,600,000,000

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