For the spring semester 2014, California residents paid an enrollment fee of $46 per unit (credit or hour) at Santa Barbara City College. Students were also required to pay a $18 health fee each semester. Let T be the total cost (in dollars) of enrollment and health fees when taking M units of courses.
a. Identify the explanatory and response variables.
b. Find the slope of a linear model. What does it mean in this situation?
c. Find an equation of the model.
d. Graph the model by hand.
e. What was the total one-semester cost of tuition plus health fee for 15 units of classes?