SOLUTION: In a newly opened department store, a couple bought a double deck for their two kids. Following the policy of the department store, they paid the cost of the purchased item the 12%

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Question 1165927: In a newly opened department store, a couple bought a double deck for their two kids. Following the policy of the department store, they paid the cost of the purchased item the 12% sales tax, and the 300.00 delivery charge.
a. Write a function g(x) for the total amount, after taxes, on the purchase amount x.
b. Write another f(x) for the total including the delivery fee, on the purchase amount x.
c. Determine and interpret f circle g (x). Which result in a lower cost.
d. Suppose taxes , by law, are not to be charged on delivery fees which composite function must then be used?

Please help me. Thank you.

Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52855) About Me  (Show Source):
You can put this solution on YOUR website!
.

M A K E S   no   S E N S E.




Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
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b. Write another f(x) for the total including the delivery fee, on the purchase amount x.
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f%28x%29=x%2B0.12x%2B300
highlight%28f%28x%29=1.12x%2B300%29
This includes the tax and the delivery.


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a. Write a function g(x) for the total amount, after taxes, on the purchase amount x.
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highlight%28g%28x%29=1.12x%29--------this was not described to include the delivery charge.