Unit 2 Lesson 6-8 QUIZ

Which equation is equivalent to the equation 6x+9=12 ? (lesson 6)

• x+9=6

• 2x+3=4

• 3x+9=6

• 6x+12=9

Select all the equation that have the same solution as the equation 3x-12=24 (lesson 6)

• 15x-60=120

• 3x=12

• 3x=36

• x-4=8

• 142x-12=24

Which equation is equation is equivalent to the equation 5x+30=45? (lesson 6)

• 35x=45

• 5x=75

• 5(x+30)=45

• 5(x+6)=45

Match the equation with the equivalent equation.

3x+6=4x+7 (lesson 7)

• 9x=4x+7

• 3x+18=4x+7

• 3x=4x+7

• 3x-1=4x

Tags

CCSS.8.EE.C.7A

Match the equation with the equivalent equation.

3(x+6)=4x+7 (lesson 7)

• 9x=4x+7

• 3x+18=4x+7

• 3x=4x+7

• 3x-1=4x

Tags

CCSS.8.EE.C.7A

Mai says that equation A and B have the same solution.

Equation A: -3(x+7)=24

Equation B: x+7= - 8

Which statement explains why this is true? (lesson 7)

• Adding 3 to both sides of Equation A gives x+7= -8

• Applying the distributive property to Equation A gives x+7= - 8

• Subtracting 3 from both sides of Equation A gives x+7= - 8

• Dividing both sides of Equation A by -3 gives x + 7 = - 8

Tags

CCSS.HSA.REI.A.1

Tank A initially contained 124 liters of water. It is then filled with more water, at a constant rate of 9 liters per minute. Which equation models this situation? Let T represent the total amount of water in the tank and m is the number of minutes that has passed. (lesson 8)

• T=124+9m

• T=124m+9

• M=124T+9

• M=124(T+9)

Tags

CCSS.HSF-BF.A.1A

Tank B initially contained 80 liters of water. It is draining at a constant rate of 2.5 liters per minute. How many liters are left after 7 minutes? (Lesson 8)

• 62.5 liters

• 97.5 liters

• 77.5

• Tank B is empty after 7 minutes

Tags

CCSS.HSF-LE.A.1B

Tank B initially contained 80 liters of water. It is draining at a constant rate of 2.5 liters per minute. How many minutes has the water been draining if there is 32.5 liters of water in the tank? (lesson 8)

• 19 minutes

• 2 minutes

• 47.5 minutes

• 32 minutes

Tags

CCSS.HSF-LE.A.1B

Bananas cost $0.50 each, and apples cost $1.00 each. Elena spent $3.50. What combination of apples and bananas did she buy?

• 2 bananas and 2 apples

• 3 bananas and 2 apples

• 1 banana and 2 apples