Question 1090005

Suppose the monthly cost of long distance  phone plan in dollars is a linear function of the total calling time in minutes when graphed ,the function gives a line with a slope of 0.11 the monthly cost for 49 minutes of calls is 17.67 what  is the  monthly cost for 44 minutes of  calls
<pre>Fixed cost = 12.28, so 44 minutes cost: {{{highlight_green("$17.12")}}}