For Exercises 3 and 4, the side lengths and height in the figure at the right are multiplied by 5. Justify your answers. 10 m 6.1 m 3. Describe the change in the perimeter. 6 m 4. Describe the change in the area.​

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125