In the image, two circles are centered at A. The circle containing B was dilated to produce the circle containing B′. What is the scale factor of the dilation? A.
1

B.
2

C.
0.5

D.
-0.5

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.

umm im not really sure because i never had to do this

step-by-step explanation:

convert the answer to millimeters there are 25.4 millimeters in an inch and 12 inches in a foot so just divide the 5280 feet into a fraction of the numbers till you get to the simplest form you need so (5280 x 12=63360 inches) (63360 x 25.4=1609344 millimeters) (5280/12=440 feet) its as simple as that just break it down to it's simplest form.