12. Nancy is trying to decide which cell phone plan would be the right one for her. She has narrowed her choices down to two, Spirit and Horizon. Spirit (s) has a fixed fee of $20 and an
additional charge of 5 cents per minute. Horizon (h) has no fee and charges 15 cents per minute.
Write two equations that could be used to determine the total cost for each plan for 300 minutes?
A. s = 5x + 20
B. s = 0.05x + 20
h = 15x
h = 0.15x
a. s = 15x
h = 5x + 20
D. S = 0.15x
h = 0.05x + 20