7th Edition

ISBN: 9780134683713

Author: Robert F. Blitzer

Publisher: PEARSON

Concept explainers

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.

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The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

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Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experime…

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Textbook Question

Chapter 8.8, Problem 4E

In Exercises 3-4 involve credit cards that calculate interest using the average daily balance method. The monthly inetest rate is 1.2% of the average daily balance. Each exercise shows transactions that occurred during the June 1-June 30 billing period. In each exercises,

a. Find the average daily balance for the billing period. Round to the nearest cent.

b. Find the interest to be paid on July 1, the next billing date. Round to the nearest cent.

c. Find the balance due on July 1.

d. this credit card requires a $30 minimum monthly payment if the balance due at the end of the billing period is less than $400. Otherwise, the minimum monthly payment is $$ of the balance due at the end of the billing period, rounded up to the nearest whole dollar. What is the minimum monthly payment due by July 9?

Transaction Description	Transaction Amount
Previous balance, $4037.93
June 1 Billing date
June 5 Payment	$ 350.00 credit
June 10 Charge: Gas	$ 31.17
June 15 Charge: Prescriptions	$ 42.50
June 22 Charge: Gas	$ 43.86
Charge: Groceries	$ 112.91
June 29 Charge: Clothing	$ 96.73
June 30 End of billing period
Payment Due Date: July 9

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Chapter 8.8, Problem 3E

Chapter 8.8, Problem 5E

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Chapter 8 Solutions

Thinking Mathematically (7th Edition)

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Solution Summary: The author explains how to calculate the average daily balance for the billing period. The monthly rate of interest is 1.2%.

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