Equations & Inequalities

Which of the following situations could be descried by the equation y=120-25x?

• 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

Tags

CCSS.6.EE.C.9

Lee charges $3 for a basket and $2.50 for each pound of fruit picked at the orchard. Write an equation in y = mx + b form for the total cost of x pounds of fruit from the orchard.

• y = 3x + 2.5
• y = 2.50x + 3
• y = 2.50x 
• y = 3x + 2.50

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Valley Video charges a $15 annual fee plus $3 per movie for rentals. Last year, Jennifer spent $99 at the video store. How many movies did she rent? Write the linear equation and solve for the number of movies.

• 15x + 3x = 99    and 6 movies
• 15x + 3 = 99 and 6 movies
• 3x + 15 = 99 and 28 movies
• 3x + 99 = 15 and 28 movies

Tags

CCSS.7.EE.B.4A

A 7-inch candle burns at a rate of 2-inches per hour. Which equation represents the relationship between y, the height of the dandle in inches, and x, the number of hours the candle burns?

• y=2x+7
• y=7-2x
• y=2-7x
• y=7x+2

Tags

CCSS.HSF-BF.A.1A

A fitness club opens with 80 members. Each month the membership increases by 15 members. Which equation represents the relationship between the number of months the club has been opened, x, and the total fitness club membership, y?

• y=15x
• y=15x+80
• y=x+15
• y=80x+15

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which of the following situations can be represented by y=10+0.55n

• The total cost at a store for one book that costs $10 and n bookmarks that cost $0.55 each.
• The total cost of 10 bags of chips that cost $0.55 each.
• The height of a tree after n day that was 10feet tall and it grew 55 feet a day.
• Not here

Tags

CCSS.HSF.LE.B.5

An electrician charges $25 to make a house call, plus $40 for every hour of work. Which equation shows how to find C, the total cost for having the electrician work for h hours?

• C = 25+40h
• C = 65+h
• C = 65h
• C = 25h +40

Tags

CCSS.HSF-BF.A.1A

Write the inequality:
You have to be 54 inches or taller to ride the American Eagle

• x > 54
• x < 54
• x ≥ 54
• x ≤ 54

All students must get at least a 60% for the year in order to pass math.≥≤

• x = 60
• x > 60
• x ≥ 60
• x ≤ 60

Write an inequality for this situation:
We need to make at least $10,000

• x < 10000
• x > 10000
• x ≤ 10000
• x ≥ 10000

Tags

CCSS.6.EE.B.8