Question

A)
Jorge draws a rectangle measuring 3 ft. by 2 ft. Then, he dilates the rectangle so it is 7.5 ft. by 5 ft. If
x
represents the area of the original rectangle, which expression can he use to discover the area of thedilated rectangle?
(1 point)
x(2.5)2
x + (2.5)2
x(1.5)2
x (2.5)

Answer 1

Scale factor = 7.5/3 = 2.5 (also 5/2). Area scales by the square of the scale factor, so new area = x*(2.5)^2. Thus the correct choice is x(2.5)^2.