What is the answer to 17 and 18?

What is the measure of angle afe? 79 81 91 99

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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