Question

The cost of cell phone plan A is $12 per month plus $0.15 per minute. Cell phone plan B costs $8 per month plus $0.20 per minute. If Amanda talks on the phone for 65 minutes in a month, which plan is less expensive for Amanda, and by how much?

Answer 1

Plan B is less expensive by $0.75.

Explanation:

m = months

t = minutes

Plan A

12m + 0.15t

12(1) + 0.15(65)

12 + 9.75

= 21.75

Plan B: 8m + 0.20t

8(1) + 0.20(65)

8 + 13

= 21

21.75 > 21