Melissa is choosing a cellphone plan and wants the lowest monthly cost. Telus charges $12 per month plus $0.05 per minute for cellphone service. Koodo charges $22 per month for unlimited minutes.

Question

Write an equation representing the total monthly cost for each cellphone service.

Please help me as soon as possible! Also, please answer with steps!! Thank you!!

Answer 1

T = 12 + .05M

K =22

where T = cost of the Tesla plan and K=cost of the Koodo plan

12+.05M = 22

.05M = 22-12 = 10

M = 10/.05 = 1000/5 = 200 minutes

If you use more than 200 minutes per month Koodo is cheaper

If you use less than 200 minutes per month, Tesla is cheaper

If you use exactly 200 minutes per month, both plans cost the same