Question

Use the scatter plot and given information to answer the question. A scatter plot with the x-axis labeled Items Sold and y-axis labeled Profit in dollars. It contains 12 points that are modeled by a line of best fit.© 2018 StrongMind. Created using GeoGebra. The data in the plot are represented by the line of fit f(x)=3x+20.If 50 items are sold, what is the predicted profit?Enter your answer as a whole number, like this: 42

Answer 1

Given:

A scatter plot with the x-axis labeled Items Sold and y-axis labeled Profit in dollars. It contains 12 points that are modeled by a line of best fit and the data in the plot are represented by the line of fit as below

$f(x)=3x+20$

Required:

What is the profit when 50 items sold.

Explanation:

Here as we can see that the profit when 20 items sold is $80 because is we substitute x=20 we get

$f(20)=3(20)+20=60+20=80$

similarly for 40 items take x=40 we get

$f(40)=3(40)+20=140$

but here we need x=50 we we get

$f(50)=3(50)+20=170$

Final answer:

Profit at 50 items sold the predicted profit is $170.