ELEMENTARY+INTERMEDIATE ALGEBRA

6th Edition

ISBN: 9781285074672

Author: Larson

Publisher: CENGAGE L

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Question

Chapter 7.6, Problem 27E

To determine

To estimate: The amount of the sales tax.

Expert Solution

Answer to Problem 27E

The amount of the sales tax is $0.931 .

Explanation of Solution

Given information: The pizzas you order for home delivery cost $19 . The sales tax is 4.9% and you plan to give a 15% tip.

Calculation: Here, The cost of the pizza is $19 and rate of sales tax is 4.9% .

Let, The amount of sales tax is x

Where, x=4.9% of $19 .

Here, Percent (%) means ‘out of 100 ’ and when dealing with percents the word ‘of’ means ‘times or to multiply’.

Hence, Hence, 4.9% can be written as 4.9100 and 4.9% of $19 can be written as 4.9100×$19 .

Let’s find the value of x ,

x=4.9100×$19x=$0.931

Hence, The amount of the sales tax is $0.931 .

To determine

To estimate: The amount of tip.

Expert Solution

Answer to Problem 27E

The amount of tip is $2.85 .

Explanation of Solution

Given information: The pizzas you order for home delivery cost $19 . The sales tax is 4.9% and you plan to give a 15% tip.

Calculation: If want to leave a 15% the fact we can use is 15%=10%+5% .

Let’s find the amount of tip,

= $1.9+$1.92=$1.9+$0.95=$2.85

Explanation of the method is ,

Hence, Calculate 10% of the bill by moving the decimal point one position to the left. After that take the half of the number and add the new amount of the original 10% .

Hence, The amount of tip is $2.85 .

To determine

To estimate: The total cost of the order.

Expert Solution

Answer to Problem 27E

The total cost of the order is $22.781 , and the estimate of the total cost is same as the total cost of the order.

Explanation of Solution

Given information: The pizzas you order for home delivery cost $19 . The sales tax is 4.9% and you plan to give a 15% tip.

Calculation: The cost of the pizza is $19 , the sales tax is 4.9% and the tip is 15% .

The amount of sales tax and the amount of tip should be added with the cost of the pizza.

Let’s find the total cost of the order,

=$19+$0.931+$2.85=$22.781

Hence, The total cost of the order is $22.781 , and the estimate of the total cost is same as the total cost of the order.

To determine

To find: The exact cost of the order.

Expert Solution

Answer to Problem 27E

The exact total cost of the order is $22.781 and the exact the total cost is exactly equal to the estimated total cost of the order.

Explanation of Solution

Given information: The pizzas you order for home delivery cost $19 . The sales tax is 4.9% and you plan to give a 15% tip.

Calculation: The cost of the pizza is $19 , the sales tax is 4.9% and the tip is 15% .

The amount of the sales tax is,

=4.9100×$19=$0.931

The amount of the tip is,

=15% of $19=15100×$19=$285100=$2.85

Let’s find the exact total cost of the order,

=$19+$0.931+$2.85=$22.781

Hence, The exact total cost of the order is $22.781 and the exact the total cost is exactly equal to the estimated total cost of the order.

Chapter 7.6, Problem 26E

Chapter 7.6, Problem 28E

Chapter 7 Solutions

ELEMENTARY+INTERMEDIATE ALGEBRA

Ch. 7.1 - Prob. 1C Ch. 7.1 - Prob. 2C Ch. 7.1 - Prob. 3C Ch. 7.1 - Prob. 4C Ch. 7.1 - Prob. 5C Ch. 7.1 - Prob. 6C Ch. 7.1 - Prob. 7C Ch. 7.1 - Prob. 8C Ch. 7.1 - Prob. 9C Ch. 7.1 - Prob. 1E

Ch. 7.1 - Prob. 2E Ch. 7.1 - Prob. 3E Ch. 7.1 - Prob. 4E Ch. 7.1 - Prob. 5E Ch. 7.1 - Prob. 6E Ch. 7.1 - Prob. 7E Ch. 7.1 - Prob. 8E Ch. 7.1 - Prob. 9E Ch. 7.1 - Prob. 10E Ch. 7.1 - Prob. 11E Ch. 7.1 - Prob. 12E Ch. 7.1 - Prob. 13E Ch. 7.1 - Prob. 14E Ch. 7.1 - Prob. 15E Ch. 7.1 - Prob. 16E Ch. 7.1 - Prob. 17E Ch. 7.1 - Prob. 18E Ch. 7.1 - Prob. 19E Ch. 7.1 - Prob. 20E Ch. 7.1 - Prob. 21E Ch. 7.1 - Prob. 22E Ch. 7.1 - Prob. 23E Ch. 7.1 - Prob. 24E Ch. 7.1 - Prob. 25E Ch. 7.1 - Prob. 26E Ch. 7.1 - Prob. 27E Ch. 7.1 - Prob. 28E Ch. 7.1 - Prob. 29E Ch. 7.1 - Prob. 30E Ch. 7.1 - Prob. 31E Ch. 7.1 - Prob. 32E Ch. 7.1 - Prob. 33E Ch. 7.1 - Prob. 34E Ch. 7.1 - Prob. 35E Ch. 7.1 - Prob. 36E Ch. 7.1 - Prob. 37E Ch. 7.1 - Prob. 38E Ch. 7.1 - Prob. 39E Ch. 7.1 - Prob. 40E Ch. 7.1 - Prob. 41E Ch. 7.1 - Prob. 42E Ch. 7.1 - Prob. 43E Ch. 7.1 - Prob. 44E Ch. 7.1 - Prob. 45E Ch. 7.1 - Prob. 46E Ch. 7.1 - Prob. 47E Ch. 7.1 - Prob. 48E Ch. 7.1 - Prob. 49E Ch. 7.1 - Prob. 50E Ch. 7.1 - Prob. 51E Ch. 7.1 - 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Prob. 1C Ch. 7.5 - Prob. 2C Ch. 7.5 - Prob. 3C Ch. 7.5 - Prob. 4C Ch. 7.5 - Prob. 5C Ch. 7.5 - Prob. 6C Ch. 7.5 - Prob. 7C Ch. 7.5 - Prob. 8C Ch. 7.5 - Prob. 1E Ch. 7.5 - Prob. 2E Ch. 7.5 - Prob. 3E Ch. 7.5 - Prob. 4E Ch. 7.5 - Prob. 5E Ch. 7.5 - Prob. 6E Ch. 7.5 - Prob. 7E Ch. 7.5 - Prob. 8E Ch. 7.5 - Prob. 9E Ch. 7.5 - Prob. 10E Ch. 7.5 - Prob. 11E Ch. 7.5 - Prob. 12E Ch. 7.5 - Prob. 13E Ch. 7.5 - Prob. 14E Ch. 7.5 - Prob. 15E Ch. 7.5 - Prob. 16E Ch. 7.5 - Prob. 17E Ch. 7.5 - Prob. 18E Ch. 7.5 - Prob. 19E Ch. 7.5 - Prob. 20E Ch. 7.5 - Prob. 21E Ch. 7.5 - Prob. 22E Ch. 7.5 - Prob. 23E Ch. 7.5 - Prob. 24E Ch. 7.5 - Prob. 25E Ch. 7.5 - Prob. 26E Ch. 7.5 - Prob. 27E Ch. 7.5 - Prob. 28E Ch. 7.5 - Prob. 29E Ch. 7.5 - Prob. 30E Ch. 7.5 - Prob. 31E Ch. 7.5 - Prob. 32E Ch. 7.5 - Prob. 33E Ch. 7.5 - Prob. 34E Ch. 7.5 - Prob. 35E Ch. 7.5 - Prob. 36E Ch. 7.5 - Prob. 37E Ch. 7.5 - Prob. 38E Ch. 7.5 - Prob. 39E Ch. 7.5 - Prob. 40E Ch. 7.5 - Prob. 41E Ch. 7.6 - Prob. 1C Ch. 7.6 - Prob. 2C Ch. 7.6 - 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Prob. 6E Ch. 7.7 - Prob. 7E Ch. 7.7 - Prob. 8E Ch. 7.7 - Prob. 9E Ch. 7.7 - Prob. 10E Ch. 7.7 - Prob. 11E Ch. 7.7 - Prob. 12E Ch. 7.7 - Prob. 13E Ch. 7.7 - Prob. 14E Ch. 7.7 - Prob. 15E Ch. 7.7 - Prob. 16E Ch. 7.7 - Prob. 17E Ch. 7.7 - Prob. 18E Ch. 7.7 - Prob. 19E Ch. 7.7 - Prob. 20E Ch. 7.7 - Prob. 21E Ch. 7.7 - Prob. 22E Ch. 7.7 - Prob. 23E Ch. 7.7 - Prob. 24E Ch. 7.7 - Prob. 25E Ch. 7.7 - Prob. 26E Ch. 7.7 - Prob. 27E Ch. 7.7 - Prob. 28E Ch. 7.7 - Prob. 29E Ch. 7.7 - Prob. 30E Ch. 7.7 - Prob. 31E Ch. 7.7 - Prob. 32E Ch. 7.7 - Prob. 33E Ch. 7.7 - Prob. 34E Ch. 7.7 - Prob. 35E Ch. 7.7 - Prob. 36E Ch. 7.7 - Prob. 37E Ch. 7 - Prob. 1PSQ Ch. 7 - Prob. 2PSQ Ch. 7 - Prob. 3PSQ Ch. 7 - Prob. 4PSQ Ch. 7 - Prob. 5PSQ Ch. 7 - Prob. 6PSQ Ch. 7 - Prob. 7PSQ Ch. 7 - Prob. 8PSQ Ch. 7 - Prob. 9PSQ Ch. 7 - Prob. 1MCQ Ch. 7 - Prob. 2MCQ Ch. 7 - Prob. 3MCQ Ch. 7 - Prob. 4MCQ Ch. 7 - Prob. 5MCQ Ch. 7 - Prob. 6MCQ Ch. 7 - Prob. 7MCQ Ch. 7 - Prob. 8MCQ Ch. 7 - Prob. 9MCQ Ch. 7 - Prob. 10MCQ Ch. 7 - Prob. 11MCQ Ch. 7 - Prob. 12MCQ Ch. 7 - Prob. 13MCQ Ch. 7 - Prob. 14MCQ Ch. 7 - Prob. 15MCQ Ch. 7 - Prob. 16MCQ Ch. 7 - Prob. 17MCQ Ch. 7 - Prob. 18MCQ Ch. 7 - Prob. 19MCQ Ch. 7 - Prob. 20MCQ Ch. 7 - Prob. 21MCQ Ch. 7 - Prob. 22MCQ Ch. 7 - Prob. 1CR Ch. 7 - Prob. 2CR Ch. 7 - Prob. 3CR Ch. 7 - Prob. 4CR Ch. 7 - Prob. 5CR Ch. 7 - Prob. 6CR Ch. 7 - Prob. 7CR Ch. 7 - Prob. 8CR Ch. 7 - Prob. 9CR Ch. 7 - Prob. 10CR Ch. 7 - Prob. 11CR Ch. 7 - Prob. 12CR Ch. 7 - Prob. 13CR Ch. 7 - Prob. 14CR Ch. 7 - Prob. 15CR Ch. 7 - Prob. 16CR Ch. 7 - Prob. 17CR Ch. 7 - Prob. 18CR Ch. 7 - Prob. 19CR Ch. 7 - Prob. 20CR Ch. 7 - Prob. 21CR Ch. 7 - Prob. 22CR Ch. 7 - Prob. 23CR Ch. 7 - Prob. 24CR Ch. 7 - Prob. 25CR Ch. 7 - Prob. 26CR Ch. 7 - Prob. 27CR Ch. 7 - Prob. 28CR Ch. 7 - Prob. 29CR Ch. 7 - Prob. 30CR Ch. 7 - Prob. 31CR Ch. 7 - Prob. 32CR Ch. 7 - Prob. 33CR Ch. 7 - Prob. 34CR Ch. 7 - Prob. 35CR Ch. 7 - Prob. 36CR Ch. 7 - Prob. 37CR Ch. 7 - Prob. 38CR Ch. 7 - Prob. 39CR Ch. 7 - Prob. 40CR Ch. 7 - Prob. 41CR Ch. 7 - Prob. 42CR Ch. 7 - 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Prob. 34CP

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