Please Help. An internet advertisement agency charges by the number of words (minimum of ten words) for advertising. Write a function to represent the advertising cost.

Don't have enough information to be sure.

Step-by-step explanation:

Our total cost is C.

W represents the number of words you write.

But since we don't know how much the agency charges, we can't be sure what will be placed in front of W.

x:       y:  

-1         4

0         4

1         6

2         18

3         20  

it is a horizontal line.