Lisa tutors chemistry. For each hour that she tutors, she earns 30 dollars.Let A be the amount Lisa earns (in dollars) after tutoring for H hours.Write an equation relating A to H. Then use this equation to find how much Lisa earns after tutoring for 15 hours.

Charmaine tutors English. For each hour that she tutors, she earns 40 dollars.Let A be the amount Charmaine earns (in dollars) after tutoring for H hours.Write an equation relating A to H. Then use this equation to find how much Charmaine earns after tutoring for 17 hours.

Kayla is working two summer jobs, making $10 per hour lifeguarding and $21 per hour tutoring. Last week Kayla worked 4 times as many hours tutoring as she worked lifeguarding and earned a total of $188. Write a system of equations that could be used to determine the number of hours Kayla worked lifeguarding last week and the number of hours she worked tutoring last week. Define the variables that you use to write the system.

Rita earns 44 dollars each week working part-time at a bookstore. She earns one additional dollar for each book that she sells.Let A be the amount (in dollars) that Rita earns in a week if she sells B books.Write an equation relating A to B. Then use this equation to find the amount of money Rita earns if she sells 25 books.

Emma occasionally babysits her younger cousin after school. When she does, she earns $16 an hour.Let h represent the number of hours Emma babysits and d represent the total earnings in dollars.This relationship can also be shown in a table. Complete the equation that represents the relationship between h and d.h d1 162 323 484 64d=

Each year, Mr. Watson's class does a service project. Mr. Watson volunteers 2 hours of time, and he asks each student to volunteer one hour.Let s represent the number of students in Mr. Watson's class one year and h represent the total number of volunteer hours that year.This relationship can also be shown in a table. Complete the equation that represents the relationship between s and h.s h1 32 43 54 6h=