f(x)=(2.25+0.25x)*(1400-0.25x)

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Solution for f(x)=(2.25+0.25x)*(1400-0.25x) equation: 


Simplifying
f(x) = (2.25 + 0.25x)(1400 + -0.25x)

Multiply f * x
fx = (2.25 + 0.25x)(1400 + -0.25x)

Multiply (2.25 + 0.25x) * (1400 + -0.25x)
fx = (2.25(1400 + -0.25x) + 0.25x * (1400 + -0.25x))
fx = ((1400 * 2.25 + -0.25x * 2.25) + 0.25x * (1400 + -0.25x))
fx = ((3150 + -0.5625x) + 0.25x * (1400 + -0.25x))
fx = (3150 + -0.5625x + (1400 * 0.25x + -0.25x * 0.25x))
fx = (3150 + -0.5625x + (350x + -0.0625x2))

Combine like terms: -0.5625x + 350x = 349.4375x
fx = (3150 + 349.4375x + -0.0625x2)

Solving
fx = 3150 + 349.4375x + -0.0625x2

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.
f = 3150x-1 + 349.4375 + -0.0625x

Simplifying
f = 3150x-1 + 349.4375 + -0.0625x

Reorder the terms:
f = 349.4375 + 3150x-1 + -0.0625x

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