Solve for c
c=\frac{\left(x+100\right)\left(x+500\right)}{2000}
Solve for x (complex solution)
x=50\sqrt{\frac{4c}{5}+16}-300
x=-50\sqrt{\frac{4c}{5}+16}-300
Solve for x
x=20\sqrt{5c+100}-300
x=-20\sqrt{5c+100}-300\text{, }c\geq -20
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c=25+\frac{3}{10}x+0.0005x^{2}
Divide each term of 500+6x+0.01x^{2} by 20 to get 25+\frac{3}{10}x+0.0005x^{2}.
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