HELP FAST WILL GIVE BRAINLIST! Pre-image ABCD was dilated to produce image A'B'C' D'

What is the scale factor from the pre-image to the image?
Enter your answer in the box as a fraction in simplest form.

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

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?