Question

Grant is a member of a book club. He pays a $10 yearly membership fee and can purchase books through the club for $2.75 each. His total annual cost is a function of the number of books, b, that he purchases in a year:

C(b) = 2.75b + 10



What is the total cost if he purchases 13 books in a year?
$

Answer 1

Answer: If Grant purchases 13 books in a year, his total cost would be $45.75.

Step-by-step explanation: Plug in the value for the number of books into the function.

Hope this Helps.

Answer 2

Answer: To find the total cost if Grant purchases 13 books in a year, we can use the given function C(b) = 2.75b + 10.

Plugging in the value of b as 13, we get:

C(13) = 2.75(13) + 10

Multiplying 2.75 by 13 gives us 35.75, so we have:

C(13) = 35.75 + 10

Adding 35.75 and 10 gives us the total cost:

C(13) = 45.75

Therefore, the total cost if Grant purchases 13 books in a year is $45.75