For this case we have that the original price of the book is given by:
$ 19.75
The customer has a coupon to save part of the price of the book.
Therefore, the customer will pay
[tex] 19.75 - x
[/tex]
Where,
x: value of the customer coupon.
We know that the customer has a coupon that has a value of $ 4.50.
Substituting values we have:
[tex] 19.75 - 4.50 = 15.25
[/tex]
Answer:
she will pay for the book 15.25 $
