Answer + Step-by-step explanation:
This is a three degree function
(by the image A and B can't be right)
Both have the same denominator
Remove the denominator
5=n
3/15 means if you pay the bill within 15 you will get a discount by 3%
Now solve your question
178.95−(178.95×0.03)
=173.58 be paid
F(3k)=3k +7 Equals 9k+7. So 9k+7 would be the Answer.