suppose that the credit remaining on a phone card is a linar function of the total calling time in minues. when graphed the function gives the a line with a slope of -0.12. there is 28.24 in credit remaining on the card after 27 minuets of calls, how much credit will there be after 36 minuets of calls.
will it be 23.92
12x 36= 4.322-28.24=23.92
will it be 23.92
12x 36= 4.322-28.24=23.92