15. Supposed you want to call your mother by phone. The charge of a
pay phone call is Php 8 for first 3 minutes and an additional charge
of Php 3 for every additional minute. Which equation represents the
problem in the given situation?
A. y = 3x – 3 B. y = 3x –2 C. y = 3x – 1 D. y = 3x + 1