SOLUTION: if f(x) varies directly with x^2, and f(x)=80 when x=4 find the value of f(7)

SOLUTION: if f(x) varies directly with x^2, and f(x)=80 when x=4 find the value of f(7)

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Question 1077501: if f(x) varies directly with x^2, and f(x)=80 when x=4 find the value of f(7)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
I can say:

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When ,

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