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OpenStax, Intermediate Algebra 2e §3.6 Graphs of Functions · Exercise 218 · Algebra · Graphs

Graphs of Functions · Exercise 218

Graph each linear inequality.

Hiro works two part time jobs in order to earn enough money to meet her obligations of at least $450 a week. Her job at the mall pays $10 an hour and her administrative assistant job on campus pays $15 an hour. How many hours does Hiro need to work at each job to earn at least $450?
ⓐ Let x be the number of hours she works at the mall and let y be the number of hours she works as administrative assistant. Write an inequality that would model this situation.
ⓑ Graph the inequality.
ⓒ Find three ordered pairs that would be solutions to the inequality. Then explain what that means for Hiro.

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OpenStax, Intermediate Algebra 2e · §3.6 Graphs of Functions · Exercise 218

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