11. Mike is a veterinarian. He is placing a 9-line classified ad for an assistant. The following piecewise function gives the price of an
X-line ad.
45
when <3
45 + 9x - 3) when x > 3
a. Find the difference between the cost of a 2-line ad and the cost of
a 3-line ad
b. Find the cost of a 10-line ad.
6. Find the cost of an 11-line ad.
d. Can you find the difference between the cost of a 15-line ad
and a 17.line ad, without finding out the cost of each ad first?
Explain