The area of a rectangle is 70 in² and the length of the rectangle is 3 in. longer than the width. the area of a rectangle is found by multiplying the length times the width. during the set up step of the five-step problem-solving plan, which equation would you set up to solve for the width? 3w = 70 w + 3w = 70 w(w+3)=70 w + 3 = 70