# we are going over the guess and check method. and im having trouble setting up this problem."Rachel works two different jobs. She is paid \$15 per hour as a caretaker for a senior citizen and \$8 per hour as a dog walker. last week she worked a total of 21 hours and earned a total of \$280. How many hours did she work at each job that week?"

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...
Question

we are going over the guess and check method. and im having trouble setting up this problem.

"Rachel works two different jobs. She is paid \$15 per hour as a caretaker for a senior citizen and \$8 per hour as a dog walker. last week she worked a total of 21 hours and earned a total of \$280. How many hours did she work at each job that week?"

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