Question

One smartphone plan costs $30 per month for talk and messaging and $8 per gigabyte of data used each

Answer 1

A;

30 + 8g = c

B;

60 + 3g = c

60 + 3g = 30 + 8 g

30 = 5g

g = 6

6 gigs would have to be used in both for the cost to be the same