Line qr has undergone a dilation.

the measure of qr is 15 cm, and the measure of q'r' is 52.5 cm. which scale factor was used for the dilation?

a.7

b.7/2

c.2

d.2/7

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

Can someone answer this question? : )

Which of the following represents the range of the graph of f(x) below