r=(4-0.75x)(25+2x)

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Solution for r=(4-0.75x)(25+2x) equation: 


Simplifying
r = (4 + -0.75x)(25 + 2x)

Multiply (4 + -0.75x) * (25 + 2x)
r = (4(25 + 2x) + -0.75x * (25 + 2x))
r = ((25 * 4 + 2x * 4) + -0.75x * (25 + 2x))
r = ((100 + 8x) + -0.75x * (25 + 2x))
r = (100 + 8x + (25 * -0.75x + 2x * -0.75x))
r = (100 + 8x + (-18.75x + -1.5x2))

Combine like terms: 8x + -18.75x = -10.75x
r = (100 + -10.75x + -1.5x2)

Solving
r = 100 + -10.75x + -1.5x2

Solving for variable 'r'.

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

Simplifying
r = 100 + -10.75x + -1.5x2

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