r(x)=391x-0.7x^2

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Solution for r(x)=391x-0.7x^2 equation: 


Simplifying
r(x) = 391x + -0.7x2

Multiply r * x
rx = 391x + -0.7x2

Solving
rx = 391x + -0.7x2

Solving for variable 'r'.

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

Divide each side by 'x'.
r = 391 + -0.7x

Simplifying
r = 391 + -0.7x

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