For her exercise today, Raina plans to both run and swim. Let r be the number of laps she runs and let s be the number of laps she swims. Each lap she runs takes her 4 minutes, and each lap she swims takes her 2 minutes. She wants to exercise for at least 45 minutes today. Using the values and variables given, write an inequality describing this.

For her exercise today, Raina plans to both run and swim. Let r be the number of laps she runs and let s be the number of laps she swims. Each lap she runs takes her 4 minutes, and each lap she swims takes her 2 minutes. She wants to exercise for at least 45 minutes today. Using the values and variables given, write an inequality describing this.

Intermediate Algebra

19th Edition

ISBN:9780998625720

Author:Lynn Marecek

Publisher:Lynn Marecek

Chapter3: Graphs And Functions

Section3.4: Graph Linear Inequalities In Two Variables

Problem 278E: Elena needs to earn at least $450 a week during her summer break to pay for college. She works two...

See similar textbooks

Similar questions

Find your last month’s phone bill and the hourly salary you are paid at your job. (If you do not have a job, use the hourly salary you would realistically be paid if you had a job.) Calculate the number of hours of work it would take you to earn at least enough money to pay your phone bill by writing an appropriate inequality and then solving it.
Elena needs to earn at least $450 a week during her summer break to pay for college. She works two jobs. One as a swimming instructor that pays $9 an hour and the other as an intern in a genetics lab for $22.50 per hour. How many hours does Elena need to work at each job to earn at least $450 per week? (a) Let x be the number of hours she works teaching swimming and let y be the number of hours she works as an intern. Write an inequality that would model this situation. (b) Graph the inequality. (c) Find three ordered pairs (x, y) that would be solutions to the inequality. Then, explain what that means for Elena.
Explain the steps for solving the compound inequality 27x5 or 4(x3)+73 .
Shanthie needs to earn at least $500 a week during her summer break to pay for college. She works two jobs. One as a swimming instructor that pays $10an hour and the other as an intern in a law office for$25 hour. How many hours does Shanthie need to work at each job to earn at least $500 per week? (a) Let x be the number of hours she works teaching swimming and let y be the number of hours she worksas an intern. Write an inequality that would model thissituation. (b) Graph the inequality. (c) Find three ordered pairs (x,y) that would be solutions to the inequality. Then, explain what that means for Shanthie.
Graph the inequality xy3 . How do you knowwhich side of the line xy=3 should be shaded?