Y varies directly with X. When X=5, Y=40. What is the value of Y when X increases to 7.
1 answer:
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Since they are both squared.
Evaluating 5^2 and 2^2 and finding the quotient also works.
The third option, "Evaluate 5^2 and 2^2 ...," and the last option, "Rewrite the expression as (5/2)^2 ...," are the correct choices.