Car maintenance
This task is about comparing the different costs of two garages.
Two garages charge for repairs in different ways.
 Kakariki Garage charges a standard $40 for a first look, and then $30 per hour for servicing.
 Honore's Garage charges $60 for the first look, and then $25 per hour for servicing.
a) 
Complete the table below to work out the costs of each garage for the hours they work.

b)

Use your results in the table above to draw and label a graph that shows the cost of using each garage over time (in hours).


Cost of work on the car by hours worked


c) 
Use the graph to help you explain when it's cheapest to use each garage.
