Question

The area of a rectangle is 70in² and the length of the rectangle is 3in longer than the width the area of a rectangle is found by multiplying the length time the width

Answer 1

basically, x(x + 3) = 70. x^2 + 3x - 70 = 0. This gives (x - 7)(x + 10) = 0, so x = 7. The length is 10 and the width is 7.