Question

Tom buys a new phone service. It costs $20 to install, and then costs $15 a month. Write an equation to show the cost of the phone (y) for any number of months (x).
A.
y=15x+20
B.
y=20x+15
C.
y=20x-15
D.
15x+20y=35

Answer 1

$20 for install, $15 every month

Answer 2

x = num of months,

then

cost = 20 + 15x

Answer 3

so B