Question

Using the table below, what is the rate of change? Don't forget to include your units.

A). $O.21 per ticket

B). $4.17 per ticket

C). $4.80 per ticket

D). $24 per ticket

Answer 1

(25, 120) (30,144)

144 - 120 / 30 - 25

24/ 5 = 4.8

The answer will be C

Answer 2

(change in output)/(change in input)
or
(change in total cost)/(change in number of tickets)
so if you have (x1,y1) and (x2,y2) the rate of change is (y2-y1)/(x2-x1)

pick 2 points

(x,y) wher x is number of tickets and y is total cost

(25,120) and (30,144)
(144-120)/(30-25)=24/5=4.8 per tiket

C is answer