What scale factor will dilate circle see to the size of Circle D

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

The height of a plant, in inches, p years after planting it is given by the polynomial function r(p) = -2p% + 270p. find the height of the plant when p = 90 years.