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| PAGE: 33 | SET: Exercises | PROBLEM: 125 |
(a)
Write the linear equation that relates the amount 
spent on advertising to the number 
of boxes the company aims to sell.
Line equation in slope-intercept form is 
,where 
is slope and 
is 
-intercept.
Advertising expenditure of the company 
-
boxes sold.
Advertising expenditure of the company 
-
boxes sold.
Use the coordinates 
to find the slope of the linear equation.
Formula for slope is 
.
.
Find the -intercept by substituting 
in 
.
.
Then the equation is 
.
The linear equation is 
.
(b)
Advertising expenditure of the company when sell 
boxes.
Substitute 
in 
.
needed to sell 
boxes
(c)
Slope is .
Each additional box requires an additional 
in advertising.
(a) The linear equation is .
(b) needed to sell boxes.
(c) Each additional box requires an additional 
in advertising.
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