Question 1204232
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The cost of hiring a taxi is given by the formula C = 2.25d + 15 where d is the distance travelled in kilometres.
(a) Find the cost of travelling 20km

(b) a trip costs a passenger $87. How far did the passenger travel?
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(a)  Substitute d = 20 kilometers into the formula.

     Get  for the cost  C = 2.25*20 + 15  dollars.

     Complete calculations on your own.



(b)  Substitute C = 87 dollars into the formula.

     Get an equation  2.25d + 15 = 87.

     From the equation, find d.
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You got all necessary instructions from me.


Boldly go forward and complete the rest.