Phone plan. The monthly cost c of marge's phone plan is given by c=40 + m, where m is the number of extra minutes she uses in that month. Name the slope and y-intercept in this situation, and explain what each represents

This equation takes the form y=mx+c.

however many minutes she uses, the base rate is 40.

y=mx+40.

c, 40 is the y intercept as it is when the number of miutes is 0.

there is no constant for m so we say it is 1. for every 1 minute used, the price goes up 1.