Question

Heather paid $1,936.70 for a computer. If the price paid includes a 7% sales tax, which of the following functions can be used to determine the price of the computer after tax?

(Let x represent the cost of the computer and f(x) represent the total cost after tax.)

Answer 1

x=4 fx=-2

Explanation:

I think you have to factor x^2-2x-8=0 to find the solutions to the equation.