a) Explanation Given:Key Concepts Applied: Let a represent the amount of money spent on advertising ( i n $ 100 s ) . Amount of money in sales S ( a ) = 10 + 20 log ( a + 1 ) where a ≥ 0 Value of S ( 1 ) ≈ 16.0 means that if $ 100 is spent on advertising $ 16000 is returned in sales Amount of money in sales is given by the function S ( a ) = 10 + 20 log ( a + 1 ) , where a represent the amount of money spent on advertising ( i n $ 100 s ) . It is also given that valueof S ( 1 ) ≈ 16.0 means that if $ 100 is spent on advertising $ 16000 is returned in sales. Here we have to find the valuesof S ( 11 ) , S ( 21 ) , a n d S ( 31 ) . By substituting the corresponding amount of money spent on advertising instead of a in the given function we can find the required values. Calculation: Description: Step 1 : By substituting a = 11 in the given formula the corresponding sales amount is found. S ( 11 ) = 10 + 20 log ( 11 + 1 ) = 10 + 20 log 12 = 10 + 20 ( 1.0791 ) = 10 + 21.5836 = 31.5836 = 31.6 Step 2 : By substituting a = 21 in the given formula the corresponding sales amount is found b) To determine The reason why the money spent in advertising becomes less “efficient” as it is used in larger amounts

18th Edition

ISBN: 9781260784626

Author: Miller

Publisher: MCGRAW-HILL HIGHER EDUCATION

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Chapter 8.4, Problem 94PE

To determine

The values of S(11), S(21), and S(31)
and round the result to one decimal place
Interpret the meaning of each function value in the context of this problem

To determine

The reason why the money spent in advertising becomes less “efficient” as it is used in larger amounts

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Chapter 8.4, Problem 93PE

Chapter 8.4, Problem 95PE

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Ch. 8.1 - a. Given the functions f and g, the function...Ch. 8.1 - Given fx=x2 and gx=2x3, find a. f2 b. g2 c. f+g2 Ch. 8.1 - Prob. 3PE Ch. 8.1 - For Exercise 3-14, refer to the function defined...Ch. 8.1 - For Exercise 3-14, refer to the function defined...Ch. 8.1 - Prob. 6PE Ch. 8.1 - Prob. 7PE Ch. 8.1 - Prob. 8PE Ch. 8.1 - For Exercise 3-14, refer to the function defined...Ch. 8.1 - Prob. 10PE

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The values of S ( 11 ) , S ( 21 ) , a n d S ( 31 ) and round the result to one decimal place Interpret the meaning of each function value in the context of this problem