Question

A long distance phone service charges $7 a month plus $0.10 per minute of call time.
a) Write an equation in the form c=mt+b to represent the total monthly charge,.C , in dollars, in terms of the time, t, in minutes.
b) Identify and explain what the slope and the C-intercept mean.

Answer 1

$7 is constant
$0.10 is the rate of charge -- that is, the slope

The C intercept is the charge for t=0 minutes

Answer 2

Is this correct if so thanks