Question

7-Eleven sells phone for $80 and charges $0.15 to send a text. which equation shows the total cost, C, of sending "t" texts?
a) C=80t + 0.15
b) C=80 + 15t
c) t=0.15C + 80
d) C=80.15t
what would be the total cost of the phone if you send 45 texts?

Answer 1

I think it is b and the total cost is 86.75