Writing the Rule- Rate of Change Word problems

During the summer, Briana runs an ice cream shop. Her biggest seller is waffle ice cream cones. She charges $1.85 for a waffle cone, and $0.60 for each scoop of ice cream.

• Y= 1.85X + 60

• y=60X + 1.85

• y=.60X + 1.85

• y= 1.85X -60

Jordan weighs 89 pounds. He wants to join the AMCHS wrestling team, so he goes on a 3000-calorie diet so that he can gain .5 pounds a day.

• Y = 5X + 89

• Y = 89X + 5

• Y = .5X - 89

• Y = .5X + 89

During the recent homecoming carnival, the debate team decided to set up a kissing booth. They had two lines which were being run by Ashley and Daniel. Ashley ran hers at a rate of 16 kisses per minute. Daniel ran his at a rate of 12 kisses per minute. Because Ashley was running late, however, Daniel had kissed 20 people before Ashley ever began. Write an equation for Daniel.

• y = 12X + 20

• y = 16x + 20

• y = 28X

• Y = 16X - 12X

Lucy and Ethel are making chocolates on a production line. Lucy’s production line moves at a rate of 10 chocolates per minute, while Ethel’s moves at a rate of 13 chocolates per minute. Because Ethel arrives late to work, Lucy has produced 42 chocolates before Ethel ever begins. Write an equation for Lucy.

• y = 13X + 42

• y = 10X + 42

• y = 42X + 10

• y = 42X + 13

The biggest seller at Roni’s Pizza Palace is their extra large pizza. Roni charges $11.95 for an extra large pizza and a charge of $0.95 per topping.

• Y = 11.95X + .95

• y = 95X + 11.95

• Y = 11.95X

• Y = .95X + 11.95

Abby and Shelby both took after school jobs as checkers at Petco. Abby checks out 9 customers per hour, while Shelby checks out 11 customers per hour. Shelby is running late, however, so by the time she starts checking out customers, Abby has already checked out 7 customers. Write an equation for Abby.

• Y = 11X + 7

• Y = 9X + 11

• y = 9X + 7

• Y = 7X + 9

Katy and Lauren are making enchiladas for supper. Lauren can make 3 enchiladas per minute, and Katy can make 5 enchiladas per minute. Lauren was too busy talking, so Katy got 3 made before Lauren ever started. Write an equation for the total enchiladas Katy can make.

• Y = 5X + 3

• Y = 3X + 3

• Y = 3X + 5

• y = 5X + 5

Sprinkles cupcakes sells cupcakes by the dozen. Sprinkles charges $12.95 for one dozen cupcakes and a charge of $0.50 per each additional topping.

• Y = 12.95X + 50

• Y = 50X + 1295

• Y = 12.95X + .50X

• Y = .50X + 12.95

Kathryn is cutting fabric squares for a quilt that she is making her mother for Christmas. She can cut 3 squares in one minute. When her friend taught her how to cut out the squares, however, they cut out 11. Write an equation representing the total number of squares Kathryn will have when she is finished.

• Y = 11X + 3

• Y = 3X + 11

• Y = 11X + 3X

• Y = 3X - 11

Chicken Express sell boxes of chicken with varying numbers of pieces. They charge 40 cents for each piece of chicken, plus a fixed charge of 55 cents for the box.

• Y = .55X + .40

• Y=40X + .55

• Y = .40X + .55

• Y = 55X + 40