Question

Your cell phone company charges $50 per month for basic service, plus an additional $0.10 per text message. Let m represent the number of text messages and C represent the total monthly bill, write an equation to find the total monthly bill from your cell phone company.
A. C = 0.10m - 50
B. C = 50m - 0.10
C. C = 0.10m + 50
D. C = 50m + 0.10

Answer 1

Which number is constant, 50 dollars, or 10 cents?

Answer 2

10 cents

Answer 3

Good job.
So which number should have a variable, 10 or 50?

Answer 4

10

Answer 5

Great! So we can eliminate B and D.

Answer 6

i think its C

Answer 7

Now. The total monthly bill represent the cost of the basic service + Text Message.
Or in equation form,

C= .10m + 50 dollars.

Make sense?

Answer 8

yes

Answer 9

Great! I hope this help. :)

Answer 10

thanks