AnswersVT-VA-EOC-SOL-Algebra I Functions and StatisticsDirect and Inverse VariationQuestion 12
12
QuizMultiple Choice

Direct and Inverse Variation

Question 12 • VT-VA-EOC-SOL-Algebra I: Functions and Statistics

Four pounds of apples cost $5. Eight pounds of apples cost $10. If the total cost of apples, y, varies directly with the number of pounds of apples purchased, x, what is the cost of 6 pounds of apples? Round your answer to the nearest hundredth.

Answer
A
$0.80
B
$1.25
C
$4.80
D
$7.50

Explanation

With direct variation, the cost per pound is constant. Using the 4-pound purchase, the rate is $5 ÷ 4 = $1.25 per pound, so 6 pounds cost 6 × $1.25 = $7.50. The correct choice is $7.50.

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