Question

joe's cell phone costs him $21 per month plus $3 for every 1GB of data downloaded. What is the limit to the number of GBs he can download to stay within his monthly budget of $30.

Answer 1

3GB’s you just add 21 to 3 and keep adding 3 until you reach 30

21+3=24 24+3=27 27+3=30

Answer 2

joe can only use 3gb of data . bill is 21

21+9+30

1gb=3

3*9=9

3(3)+21=30