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125

Step-by-step Answer
PAGE: 33SET: ExercisesPROBLEM: 125
Please look in your text book for this problem Statement

(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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