10. 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.
45
when x <3
a(x) =
45 + 9(x – 3) when x > 3
a. Find the difference between the cost of a two-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.

idk lol

step-by-step explanation:

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.

14 x 10 5

step-by-step explanation:

10 5 = 100,000

14x10,000 = 140,000