Question

please help again

Karl receives a special book offer in the mail. He can buy as many books as he wants from a list for $5.00 per book. Additionally, Karl gets a complimentary $3.00 off for participating in the offer. The equation y = 5x - 3 gives his final cost, y. As the number of books that Karl purchases increases, what happens to his overall savings

A. It fluctuates.
B. It stays the same.
C.It increases
D. It decreases.

Answer 1

Calculate y, the cost of 1 book, 10 books and 100 books, by letting x = 1, then x = 10, then x = 100.
Then for each of those, divide the cost of the books by the number of books to find the cost per book.
Then compare the cost per book by buying 1 book, 10 books, and 100 books.
As the number of books increases, what happens to the cost per book?

Answer 2

ok

Answer 3

it increases

Answer 4

as he get's a complementry of 3dollars for participating so his saving's is 3 it does not increase as he buy more books so , it remains the same

Answer 5

Correct. The price per book remains at $5, but the $3 discount remains the same no matter how many books he buys. That means that the $3 discount is a smaller discount per book as he buys more books. That means the price per book increases. You got it.

Answer 6

no 3 is only the complimentary for participating not the discount for each book