Mike is a veterinarian. He is placing a nine-line job ad for an assistant. The following piecewise function gives the price of an x-line ad. a(x) = 45 when I <3
= 45 + 9(x – 3) when I > 3
a. The difference between the cost of a two-line ad and the cost of a 3-line ad is
b
The cost of a 10-line ad is $
c
The cost of an 11-line ad is
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?
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