Suppose you conducted a survey of your classmates to determine how much money (in U.S. dollars) they intended to spend on Halloween candy this year. Which of the following scales of measurement would your measure fall under?
A. ordinal
B. interval
C. Ratio
Ans: C. Ratio
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Solve the problem.At a plant that packages bottled spring water, the water is passed through a sequence of ion-exchange filters to reduce the sodium content prior to bottling. Each filter removes 73% of the sodium present in the water passing through it. Determine the number of filters that must be used to reduce the sodium concentration from 21 parts-per-million to 1.69 parts-per-million.
A. 10 filters B. 11 filters C. 8 filters D. 9 filters
Solve the problem.The 10th hole at the Riverwoods Golf Course is 341 yards long. How long would it be on a model with a scale of 0.5 inches to 50 yards? (Round to the nearest hundredth.)
A. 25.00 in B. 4.71 in C. 4.28 in D. 3.41 in
Use cross products to determine whether the pair of fractions is equivalent.- 
and - 
A. not equivalent B. equivalent
Find all numbers for which the rational expression is not defined.
A. b = 0 B. b = 24 C. b = -6 D. b = 4