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.

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.

Dominic earns $285 per week plus an 8% commission rate on all his sales. If Dominic sells $4,213 worth of merchandise in one week, how much will his total earnings for the week be?

Barbara worked on a straight 12%12% commission. Her friend worked on a salary of $750$⁢750 plus a 6%6% commission. In a particular month, they both sold $24,100$⁢24,100 worth of merchandise.Step 2 of 2 :  How much did her friend earn for the same month? Follow the problem-solving process and round your answer to the nearest cent, if necessary.

Salma bought some books for $4 each and received a discount of $5 off of her total purchase. She spent $71 after the discount. How many books did she buy?(a) Write an equation that could be used to answer the question above. First, choose the appropriate form. Then, fill in the blanks with the numbers 4, 5, and 71. Let b represent the number of books.=+b=−b(b) Solve the equation in part (a) to find the number of books.=b

Ava is starting a cake-baking business, and she has just spent $150 for equipment. She figures that each cake will cost $4.50 to make, and she plans to sell her cakes for $12 each.Ava wants to find the number of cakes, c, she must sell to break even. In other words, she wants to know how many cakes she must sell before she has made as much money as she has spent. Which equation can she use?150+4.5c=12cc(150+4.5)=12c4.5c+12c=150150–4.5c=12c4.5c+150=12150c+4.5=12How many cakes must Ava sell before she has made as much money as she has spent?cakesSubmit