SOLUTION: David does landscaping for private homes and businesses. He charges $40.00 to travel to the site and then $40.00 per hour for his services. The equation y = 40 + 40x models the c

Question 574324: David does landscaping for private homes and businesses. He charges $40.00 to travel to the site and then $40.00 per hour for his services. The equation y = 40 + 40x models the charge for his services y for any number of hours x.
a. Graph the equation. Describe your graph.
b. What is the slope of the line? What does the slope represent?
c. What is the y-intercept of the line? What does the y-intercept represent?
d. Julia paid David $240.00 for his services. How many hours did David work?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

(a)
(b) The slope is the rate he charges, $40/hr
The slope is dollars/days
(c) The y-intercept is where , or where
there is no time charged, just the $40 for travel
(d)
Subtract from both sides

David worked 5 hrs
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