A cell phone package charges $39 even if 0 minutes are used during the month. Each additional minute of talk time adds a $0.07. Write an equation to model this situation in slope-intercept form.

Total monthly cost (x) = $39 + ($0.07/min) x

Step-by-step explanation:

The y-intercept is $39. The slope is ($0.07/minute) x, where x is the number of talk minutes. Thus:

Total monthly cost (x) = $39 + ($0.07/min) x, where x is the number of talk minutes.