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
a(x)
{45
When x ≤ 3
{45 + 9(x - 3) whenx>
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.
C.
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.