y = ( x - 40 ) ( 300 - 10 ( x - 60 ) ]
Solve for y
y=10\left(90-x\right)\left(x-40\right)
Solve for x (complex solution)
x=\frac{\sqrt{62500-10y}}{10}+65
x=-\frac{\sqrt{62500-10y}}{10}+65
Solve for x
x=\frac{\sqrt{62500-10y}}{10}+65
x=-\frac{\sqrt{62500-10y}}{10}+65\text{, }y\leq 6250
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y=\left(x-40\right)\left(300-10x+600\right)
Use the distributive property to multiply -10 by x-60.
y=\left(x-40\right)\left(900-10x\right)
Add 300 and 600 to get 900.
y=1300x-10x^{2}-36000
Use the distributive property to multiply x-40 by 900-10x and combine like terms.
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