Ken is a mechanic who owns Ace Auto Repair. He needs a foreign car expert and is placing a twelve-line classified ad. The cost of an ad x lines long is given by the following
piecewise function.
556
when x 34
c(x) =
156 + 6(x – 4) when x > 4
1. Find the cost of a four line add.
2. Find the cost of a twelve line add.