Evaluate
\left(x+30\right)\left(-\frac{x}{2}+20\right)
Expand
-\frac{x^{2}}{2}+5x+600
Graph
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600-15x+20x-0.5x^{2}
Apply the distributive property by multiplying each term of 30+x by each term of 20-0.5x.
600+5x-0.5x^{2}
Combine -15x and 20x to get 5x.
600-15x+20x-0.5x^{2}
Apply the distributive property by multiplying each term of 30+x by each term of 20-0.5x.
600+5x-0.5x^{2}
Combine -15x and 20x to get 5x.
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