The cost of a long distance call is $1.25 for the
first three minutes and $.15 for each additional
minute.
1. Which of the following equations gives the total
cost of a phone call, y, in terms of the total number
of minutes, x?
(A) y = 0.15x +1.25
(B) y=1.25.r+0.15
(C) y = 0.15(x-3)+1.25
(D) y =1.25(x-3)+0.15
(E) y = 0.15r+(3–1.25)