Question

Use the five steps for problem solving to answer the following question. Please show all of your work.

Company A charges $25 per month plus $0.22 per minute for cell phone service. Company B charges $35 per month plus $0.12 per minute. How many minutes of usage is needed in one month to make Company B a better deal?

Answer 1

heygw

Answer 2

Hi shenita--Here is what I got:

Company A: 0.22M+25
Company B: 0.12M+35

These are the two equations that we need where M=minutes

0.22M+25=0.12M+35
0.22M-0.12M=35-25
0.10M=10
M=10/0.10
M=100 minutes

I made the two equations equal to each other to determine where the plans are equal. Therefore, at 100 minutes both plans are the same. However, over 100 minutes Company B is the better deal. In other words, at 101 minutes Company B is the better deal.

Answer 3

okay let me check over

Answer 4

Y = 0.22X + 25
Y = 0.12X + 35

.22X + 25 = .12X + 35
.1X = 10
X = 100
100 minutes