Mrs. Felts Alg Module 1-2 Review

Which equation shows the number of bottles left, y, after x days? A family buys a case of water with 48 bottles and drinks 5 bottles per day.

• y = 48x + 5
• y = -5 + 48x
• y = -5x - 48
• y = 48 - 5x

Paul the plumber charges $25 for a service call. He then charges $100 an hour.  Write a linear equation to model this situation if x represents the number of hours Paul works.

• y = 100x
• y = 25x
• y = 25x + 100
• y = 100x + 25

A plumber charges $50 to make a house call. He also charges $25 per hour for labor. How much would it cost for 2.5 hours of labor?

• $100

• 4.50

• $112.50

• $65.00

• $123.45

Which of the following situations could be described by the equation y= -25x + 120

• There are 120 people in the football stadium, and 25 more are entering each hour.
• A plumber charges $25 for a house call and $120 per hour.
• A teacher has 120 students. Her third period has 25 students
• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

There are no more than 18 students on the hall.

• s>18

• s<18

• s≤18

• s≥18

There are fewer than 150 children at the playground.

• c<150
• c>150
• c≤150
• c≥150

At least 25 cats are on my porch.

• c<25
• c>25
• c≤25
• c≥25

Grace has $45 at most in her purse.

• g<45
• g>45
• g≤45
• g≥45

Damian can spend no more than $40 at the fair. If admission into the fair is $10 and the rides cost $1.50 each, which inequality represents the greatest number of rides Daniel can go on?

• 10x + 1.50 ≥ 40

• 1.50x + 10 ≤ 40

• 1.50x + 10 <40

• 10x + 1.50 < 40

• -2

• 2

• 4

• -3