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If f(x) varies directly with x^2, and f(x)=75 when x=5, find the value of f(8)

If f(x) varies directly with x^2, and f(x)=75 when x=5, find the value of f(8)
asked 184k views
3 votes
If f(x) varies directly with x^2, and f(x)=75 when x=5, find the value of f(8)

asked
User BanForFun
by
7.9k points

1 Answer

3 votes
f(x) = x² + c
f(5) = 25 + 50
f(8) = 64 + 50 = 114

answered
User Walter Rumsby
by
8.4k points
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