Grace is comparing cell phone plans. a prepaid phone plan costs $0.20 per minute and has no monthly fee. a contracted phone plan costs $50 per month and $0.02 per minute. how will the graphs of the monthy costs of the two cell phone plans compare where x represents minutes purchased in a month?

a. the prepaid phone plan will have a steeper line and lower y-intercept.
b. the contracted phone plan will have the same steepness and a higher y-intercept.
c. the prepaid phone plan will have a less steep line and the same y-intercept.
d. the contracted phone plan will have a steeper line and same y-intercept.