4. A moving truck company rents their trucks for $30 per day plus $0.60 per mile.
a. We want to write the cost as a function of miles. First we should define our variables.
x represents ____________________________
y represents ____________________________
b. State an equation representing the total cost, y, of renting a truck for x miles (assume you
rent the truck for 1 day only).
c. Write the equation from part b. using function notation.
d. Graph the equation from part b. on the axis below. Be sure to scale and label the axes.
e. Plot and label the point . What does the point represent?
f. Evaluate . Interpret your result in the context of the story problem?