Museum A natural history museum borrows
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Chapter 7 Solutions
EBK COLLEGE ALGEBRA
- Use the system of three equations in three variables to solve each problem. Work schedules A college student earns 198.50 per week working three part-time jobs. Half of his 30-hour work week is spent cooking hamburgers at a fast-food chain, earning 5.70 per hour. In addition, the student earns 6.30 per hour doing janitorial work. How many hours per week does the student work at each jobarrow_forwardWhat is a system of linear equations in the variables x, y, and z?arrow_forwardTranslate to a system of equations and then solve: Alexis wants to build a rectangular dog run in her yard adjacent to her neighbor’s fence. She will use 136 feet of fencing to completely enclose the rectangular dog run. The length of the dog run along the neighbor’s fence will be 16 feet less than twice the width. Find the length and width of the dog run.arrow_forward
- Use the system of three equations in three variables to solve each problem. Investment income A women invested at 22,000 rollover IRA account in three banks paying 5, 6 and 7 annual interest. She invested 2000 more at 6 than at 5. The total annual interest she earned was 1370. How much did she invest at each rate?arrow_forwardTranslate to a system of equations and then solve: Jason paddled his canoe 24 miles upstream for 4 hours. It took him 3 hours to paddle back. Find the speed of the canoe in still water and the speed of the river current.arrow_forwardTranslate to a system of equations and then solve: Erin spent 30 minutes on the rowing machine and 20 minutes lifting weights at the gym and burned 430 calories. During her next visit to the gym she spent 50 minutes on the rowing machine and 10 minutes lifting weights and burned 600 calories. How many calories did she burn for each minutes on the rowing machine? How many calories did she burn for each minute of weight lifting?arrow_forward
- For each system of linear equations, decide whether it would be more convenient to solve it by substitution or elimination. Explain your answer. (a) {4x5y=323x+2y=1 (b) {x=2y13x5y=7arrow_forwardTranslate to a system of equations: A couple has a total household income of $84,000. The husband earns $18,000 less than twice what the wife earns.How much does the wife earn?arrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillCollege Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage LearningBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGALElementary AlgebraAlgebraISBN:9780998625713Author:Lynn Marecek, MaryAnne Anthony-SmithPublisher:OpenStax - Rice University