Reasoning The cost of making copies at Store W is $3 regardless of the number of copies. The cost of making copies at Store Z is 20¢ per copy plus a $1 charge for the use of the machine. The total
cost, c, of making n copies at either store can be represented by an equation. Write and graph a
system to find how many copies you have to make for the cost to be the same at both stores. Use
pencil and paper. If you have to make a small number of copies which store should you go to? If you
have to make a large number of copies which store should you go to? Explain.
Write the system of equations. Choose the correct answer below.