Question

Ramona's Garage charges the following labor rates. All customers are charged for at least 0.5 hr.
​Ramona's Garage
Hours
0.5
1
1.5
2
2.5
Labor
​$60
​$90
​$120
​$150
​$180
a. Write a linear function for the data in the table.
b. A repair job took 4 hr and 15 min and required​ $390 in parts. What is the total​ cost?
Question content area bottom
Part 1
a. A linear function for the data in the table is ​f(t)equals
  
enter your response here.
​(Simplify your​ answer.)

Answer 1

a) f(t) = 60t + 30 for t ≥ 0.5.

b) 4 hr 15 min = 4.25 hr. Labor = f(4.25) = 60(4.25)+30 = $285. Total cost = 285 + 390 = $675.