Sasha's mom decided to get her a cell phone for her birthday. Cell Plus has a plan that costs $21.95 per month plus an additional $0.07 per minute. Cell Best has a plan that costs $25.95 per month plus an additional $0.05 per minute. How many minutes can Sasha talk and have the same cost each month?

0.12m = 4.00

21.95 + 0.07m = 26.00

21.95 + 0.07m = 25.95 + 0.05m

25.95 + 0.05m = 22.02

Question

Sasha's mom decided to get her a cell phone for her birthday. Cell Plus has a plan that costs $21.95 per month plus an additional $0.07 per minute. Cell Best has a plan that costs $25.95 per month plus an additional $0.05 per minute. How many minutes can Sasha talk and have the same cost each month?

 0.12m = 4.00

 21.95 + 0.07m = 26.00

 21.95 + 0.07m = 25.95 + 0.05m

 25.95 + 0.05m = 22.02

anonymous · Answer

21.95+.07m = 25.95 +.05m   (subtract .05m from both sides)
21.95 + .02m = 25.95            (subtract 21.95 from both sides)
.02m = 4.00                            (divide both sides by .02)
m = 200

Check both prices with 200 minutes:
21.95 + 200*.07 = 35.95
25.95 + 200*.05 = 35.95

anonymous · Answer

I should have written this first:

You are solving for CellPlus = CellBest

CellPlus = 21.95 + .07m
CellBest = 25.95 + .05m

Put the 2 equal to each other and solve

anonymous · Answer

21.95 + 0.07m = 25.95 + 0.05m