.15x+.07x(80,000-x)=9000

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Solution for .15x+.07x(80,000-x)=9000 equation: 



.15x+.07x(80.000-x)=9000

We move all terms to the left:

.15x+.07x(80.000-x)-(9000)=0

We add all the numbers together, and all the variables

.15x+.07x(-1x+80)-9000=0

We multiply parentheses

-1x^2+.15x+80x-9000=0

We add all the numbers together, and all the variables

-1x^2+80.15x-9000=0

a = -1; b = 80.15; c = -9000;
Δ = b2-4ac
Δ = 80.152-4·(-1)·(-9000)
Δ = -29575.9775
Delta is less than zero, so there is no solution for the equation

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