Data regarding the amount of money earned and saved by teenagers were collected. the graph shows the correlation between money earned (in dollars per hour) and money saved (in dollars): image of a scatter plot with money saved on the x axis and money earned on the y axis with points 1 comma 20, 3 comma 19, 5 comma 15, 7 comma 11, 9 comma 9, 11 comma 5 and 15 comma 3 estimate the average rate of change from x = 3 to x = 11.

The estimate average rate of change is -1.75

Step-by-step explanation:

we know that

To find the average rate of change, we divide the change in the output value by the change in the input value

the average rate of change using the graph is equal to

In this problem we have

(3,19) and (11,5)

Substitute

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads