The area of a rectangle is 65ft the length of the rectangle is 3 ft less than double the width

Use set builder notation to represent the following set: { -3, -2, -1, 0}

What is the length of the unknown leg in the right triangle ?

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39