Question

The average annual income, I in dollars of a lawyer with an age ox X years is modeled with the following function:

I=-425x⌃2 + 45, 500x-650,000

According to this model, what is the predicted average annual income of 40-year old lawyers?

Answer 1

Explanation:

I = -425x^2 + 45,500(x) - 650,000

x = 40

I = -425(40^2) + 45,500(40) - 650,000

I = -425(1600) + 1,820,000 - 650,000

I = -680,000 + 1,820,000 - 650,000

I = 1,820,000 - 1,330,000

I = 490,000 <===