3000 dollars decrease 15% after 4 years

Which of the following expressions is equal to 2x^2+8

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Scenario: a rectangular plot of ground is 5 meters longer than it is wide. its area is 20,000 square meters. question: what equation will you find the dimensions? note: let w represent the width. options: w(w+5)=20,000 w^2=20,000+5 (w(w+5))/2=20,000 w+2(w+5)=20,000