7 Your favorite store sends out coupons in the mail Coupon 1 is for 5 off your next purchase Coupon 2 is a 20 off coupon applied to your total purchase Let x the total cost of your purchase at the store a Write a function f x to represent the cost of your purchase using Coupon 1 b Write a function g x to represent the cost of yoru purchase using Coupon 2 c Find f g 75 and explain what this means in context d Find g f 75 and explain what this means in context e In which orer would you like the coupons applied for YOUR order Why