Question

A newspaper charges $3 per line for the first 4 lines plus $20 fee to advertise

Answer 1

If the question is how much does it cost for 4 lines plus a one-time advertising fee than your answer is $36.

Answer 2

The domain of the function is {1,2,3,4} and the range of the function is {$23, $26, $29, $32}

Explanation:

Consider the provided information.

A newspaper charges $3 per line for the first 4 lines plus $20 fee to advertise.

First write the function as shown.

Let l represents the number of lines and $20 fee to advertise.

Therefore the function is:
`f(x)=3l+20`

For l=1

`f(1)=3(1)+20=23`

For l=2

`f(2)=3(2)+20=26`

For l=3

`f(3)=3(3)+20=29`

For l=4

`f(4)=3(4)+20=32`

Hence, the domain of the function is {1,2,3,4} and the range of the function is {$23, $26, $29, $32}