F(x) = (5x + 3)(x - 2)(x+2)

15x^2+6x-20

Step-by-step explanation:

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d/dx (5x+3)5

((x-2)(x+2))=2x

5(x-2)(x+2)+2x(5x+3)

15x^2=6x-20

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b