Find the percent of the discount to the nearest percent.
cd player: regular price, $89
sale price, $80

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.

What is the slope of the line passing through the points (-5, 7) and (-3,5)?