U2 Review of Equations and Inequalities

Which expression represents the description correctly?

Five times a number less 6

• 5x-6

• 5x+6

• -6-5x

• -5x+6

Tags

CCSS.6.EE.A.2A

Combine like terms to simplify the expression and type in your answer using no spaces:

12 + 3.4x - 5.4x - x

(a)  

Tags

CCSS.7.EE.A.1

Tags

CCSS.7.EE.B.4A

Solve the equation below:

14x - 34 = 11x + 29

x = (a)  

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

Xander's water bottle contains 15.4 oz of water, and he is drinking 0.5 oz of water per second. Leon's water bottle contains 5.4 oz of water, and he is adding 0.75 oz of water each second. Which inequality could be used to find the number of seconds (s) it will take for Xander's water bottle to have a fewer number of ounces than Leon's water bottle?

• 15.4 + .5s > 5.4 + 7.5s

• 15.4 - .5s > 5.4 + 7.5s

• 15.4 - .5s < 5.4 + 7.5s

• 15.4 + .5s < 5.4 + 7.5s

Tags

CCSS.7.EE.B.4B

The perimeter of the triangle shown is 17x units. The dimensions of the triangle are given in units. Which equation can be used to find the value of x?

• 17x = 30 + 7x

• 17x = 15 + 22x

• 17x = 7 + 30x

• 17x = 22 + 15x

Tags

CCSS.7.EE.B.4A

Two student groups went to an amusement park on the same day. Group 1 bought 9 tickets and received a discount of $120. Group 2 bought 3 tickets and received a discount of $30. Both groups spent the same amount of money on the and the price of the ticket was the same. What is the cost of the ticket?

• $25

• $15.00

• $12.50

• $7.50

Tags

CCSS.8.EE.C.7B

Two customers spent the same total amount of money at a restaurant.

• The first customer bought 8 hot wings and left a $4 tip.

• The second customer bought 10 hot wings and left a $2.80 tip.

• Both customers paid the same amount per hot wing.

How much does one hot wing cost at this restaurant in dollars and cents?

(a)  

Tags

CCSS.7.EE.B.4A

Combine like terms and solve.

-3 + 7x - 9 + 8x = 54

x = (a)  

Tags

CCSS.8.EE.C.7B

What is the solution to the equation being modeled?

• x = 2

• x = -2

Tags

CCSS.7.EE.B.4A