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

Answer 1

Do any of these seem like they correspond to the question?

Answer 2

what do you mean?

Answer 3

Well, m is the variable referring to the number of minutes. In one plan the cost is a monthly charge plus 7 cents a min. In another plan it is a different monthly charge plus 5 cents a minute.

Answer 4

If Sasha only uses 10 minutes a month, clearly the cheaper monthly cost is more important. If she uses 10,000 minutes a month, clearly the lower per-minute cost is preferable.

Answer 5

for Cell plus = 21.95 + 0.07x
For Cell Best = 25.95 + 0.05 x

where x is minutes.. Now for same cost, equate both..

21.95 + 0.07x = 25.95 + 0.05 x
0.02x = 4

so x = 200 minutes...

Answer 6

option C :

21.95 + 0.07m = 25.95 + 0.05m

Answer 7

@rajfk35 , @Valpey : does it make sense ??