Question

Quickfix Electrical used this formula to work out the cost of repairs for Mr Semesi's TV.

 

c = 25 + 30t

 

What does the t in the equation represent?

• • The total amount that Mr Semesi had to pay for the repairs.

  • The amount Quickfix Electrical charge for travelling to Mr Semesi's house.

  • The number of hours it took to fix Mr Semesi's TV set.

  •  The amount Quickfix Electrical charge for each hour spent repairing the TV.

Question

b)  Ajax Appliances used this formula for working out the costs of repairing Ms Parata's TV set.

 

c = 20 + 32h    

 

c = the total cost of the repairs.
h = the number of hours that the repairs took. 

 

     i)  What does the 20 in the equation represent?

• • The total amount that Ms Parata had to pay for the repairs.

  • The number of repairs that Ajax Appliances made.

  • The amount Ajax Appliances charge for travelling to Ms Parata's house.

  • The amount Ajax Appliances charge for each hour repairing the TV.

Question

     ii)  What does the 32 in the equation represent?

• • The average time taken by Ajax Appliances to fix a TV set.

  •  The average number of repairs that Ajax Appliances make per hour.

  • The number of hours it took to fix Ms Parata's TV set.

  • The amount Ajax Appliances charge for each hour spent repairing the TV.