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3. Shipping charges at an online bookstore are $4 for one book, $6 for two books, and $7 for three to five books. Last week, there were 6400 orders of five or fewer books, and total shopping charges for these orders were$33,600. The number of shipments with $7 charges was 1000 less than the number with $6 charges. How many shipments were made in each category?

3. Shipping charges at an online bookstore are $4 for one book, $6 for two books, and $7 for three to five books. Last week, there were 6400 orders of five or fewer books, and total shopping charges for these orders were$33,600. The number of shipments with $7 charges was 1000 less than the number with $6 charges. How many shipments were made in each category?

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 4T: Over the past year, John has purchased 30 books. In how many ways can he pick four of these books...
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Define variables, write systems of equations, write coefficient matrix, the B matrix and the solution matrix, x

3. Shipping charges at an online bookstore are $4 for one book, $6 for two books, and $7 for three to five books. Last week, there were 6400 orders of five or fewer books, and total shopping charges for these orders were$33,600. The number of shipments with $7 charges was 1000 less than the number with $6 charges. How many shipments were made in each category?
Transcribed Image Text:3. Shipping charges at an online bookstore are $4 for one book, $6 for two books, and $7 for three to five books. Last week, there were 6400 orders of five or fewer books, and total shopping charges for these orders were$33,600. The number of shipments with $7 charges was 1000 less than the number with $6 charges. How many shipments were made in each category?
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