A. y=50+0.15x
B. y=50+0.45x
C. y=150+0.45x
D. y=150+0.15x

D

Step-by-step explanation:

you get 150 by taking the product of 50 and 3, this eliminates answers 'a' and 'b'

since the question states the cost per mile driven is $1.50  and 'x' represents miles driven, D is the answer

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0