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Syaza A.

asked • 09/18/20

Functions and graph

QUESTION 3

Ali purchased a new car from Toyoda Edar and received a car service coupon for RM300 off. A month later, Ali went to Toyoda Edar service centre, he noticed that the service centreoffered a 15% discount for any car service bill. Assume x as the car service bill for Ali on that day,

a) Write a function f(x) that represents the effect of a coupon on the car service bill. 

b) Write a function g(x) that represents the effects of a 10% discount on the car service bill. 

c) Using composite functions, if the amount of car service bill is RM450, compare the actual bill after Ali applying his coupon first then followed by a discount and applying discount first then followed by a coupon. Which one provides the lowest bill?​​


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