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If f(x) varies directly with x2, and f(x) = 75 when x = 5, find the value of f(4). 25 48 50 100

If f(x) varies directly with x2, and f(x) = 75 when x = 5, find the value of f(4). 25 48 50 100
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4 votes
If f(x) varies directly with x2, and f(x) = 75 when x = 5, find the value of f(4). 25 48 50 100

asked
User Abid Ali
by
8.4k points

1 Answer

2 votes
f(x)=3x²
because of that :
f(4)=48
answered
User Iarek
by
7.4k points
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