Question

Need help asap!!! Problem: A college bookstore charges $60 for a semester membership. The first book is free with

Answer 1

Answer:

The answers are given below.

Step-by-step explanation:

1. Let "x" books are bought from the college bookstore.

2. If "f(x)" denotes the total cost of "x" books bought from the college bookstore. Then, according to the question,

f(x) = $ $(60 + 27.60 \times (x - 1))$ -------------(1)

3. We can construct the following table,

 x                     f(x)

 1                      $ 60

 2                     $ 87.60

 3                     $ 115.20

 4                     $ 142.80

 5                     $ 170.40

4, Domain of the function is N and range of the function is

  S = {f(x) | f(x) = $ $(60 + 27.60 \times (x - 1))$, x ∈ N} ⊂ $R_{1}$

5. If Tara buys all the books, she needs to pay, a total of

$ (32.95 + 76.72 + 21.19 + 43.11)

= $ 173.97

whereas, if she purchase the membership of the college bookstore and buys books from there, she needs to pay $ 142.80 only (from the table).Hence, she should purchase the membership.