Solve for W
W=30\left(70-x\right)\left(x-40\right)
Solve for x (complex solution)
x=\frac{\sqrt{202500-30W}}{30}+55
x=-\frac{\sqrt{202500-30W}}{30}+55
Solve for x
x=\frac{\sqrt{202500-30W}}{30}+55
x=-\frac{\sqrt{202500-30W}}{30}+55\text{, }W\leq 6750
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W=-30x^{2}+3300x-84000
Use the distributive property to multiply x-40 by -30x+2100 and combine like terms.
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