SOLUTION: The formula below gives the cost (in £) for the car tom is hiring for his wedding. Cost = 150 + 45 (h - 1) h is the number of hours for which the car is hired. How much w

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Question 629661: The formula below gives the cost (in £) for the car tom is hiring for his wedding.
Cost = 150 + 45 (h - 1)
h is the number of hours for which the car is hired.
How much will it cost Tom to hire the car for 8 hours.
I just did 195x7 =1365 which is wrong please explain how to work out
Thanks

Found 2 solutions by jim_thompson5910, ewatrrr:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Cost = 150 + 45 (h - 1)

Cost = 150 + 45 (8 - 1) ... Plug in h = 8

Cost = 150 + 45 (7)

Cost = 150 + 315

Cost = 465

So it costs 465 pounds

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Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Cost = 150 + 45(h - 1) 

h is the number of hours for which the car is hired. 

How much will it cost Tom to hire the car for 8 hours. 

Cost = 150 + 45·(8-1)    

Cost = 150 + 45·7    || Need to first determine  45(8-1) and then add to 150