Question

To approximate unemployment for the years following 1990, an economist used the function f(x) = -0.26x^2 + 1.2x + 5.7, where x is the number of years since 1990

Select the function that defines the rate of change in the unemployment rate.

A.)f '(x) = -0.083x^3 + 0.6x^2 + 5.7x + C
B.)f '(x) = 1.2x + 5.7
C.)f '(x) = -0.26x + 1.2
D.)f '(x) = -0.52x + 1.2

Answer 1

Do you know how to take the derivative of a polynomial?

That is what you are supposed to do wth this one.

If you don't know, read this:

http://www.freemathhelp.com/derivative-of-polynomial.html