Best Answer

y=-0.02x2+2.4x

This is a downward facing parabola.. It will have a maximum when dy/dx = 0

dy/dx = -0.04x+2.4

-0.04x+2.4=0

-0.04x=-2.4

x=60

y has a maximum of 72 when x=60

Q: In equation y equals -0.02x2 plus 2.4x for what value of x be a maximum?

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