99 POINTS IF YOU ANSWER CORRECTLY
A transaction is positive if there is a sale and negative when there is a return. Each time a customer uses a credit card for a transaction, the credit company charges Isabel. The credit company charges 1.5% of each sale and a fee of 0.5% for returns.

a) Let x represent the amount of a transaction and let f(x) represent the amount Isabel is charged for the transaction. Write a function that expresses f(x). (10 points)
b) Graph the function. (10 points)
c) What are the domain and range of the function? (5 points)

Also the graph for this question attached with the solution, and the domain and range both for the given function are negative infinite to positive infinite.

Given-

When there is a sale then transaction is positive.

When there is a return then transaction is negative.

When there is a sale then credit company charges 1.5 percent.

When there is a return then credit company fee 0.5 percent.

Let [tex]x[/tex] represent the amount of a transaction and let [tex]f(x)[/tex] represent the amount Isabel is charged for the transaction. The function that express [tex]f(x)[/tex] is,

[tex]f(x)=1.5x[/tex]

Graph the function-The graph for the following function which satisfy all the condition of the given problem is attached below with the solution.

Both domain and range of the function are negative infinite to positive infinite.

Hence, the function that express the given problem for [tex]f(x)[/tex] is,

[tex]f(x)=1.5x[/tex]

Also the graph for this question attached with the solution, and the domain and range both for the given function are negative infinite to positive infinite.

For more about the function follow the link below-

https://brainly.com/question/5245372