Module 3 Review PA

3n - 2 = 4n - 6

Mathematical Equivalence

OFF

3.4m - 6 = 2.2m - 3.6

Mathematical Equivalence

ON

2/3 b + 5 = -1/3 b - 4

Mathematical Equivalence

ON

2(6x + 4) - 3x = 5x - 4

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

-2(3x - 5) - 2x = 2(6 - 3x)

Mathematical Equivalence

ON

A tank has 120 gallons of water and is being drained at a rate of 1/2 gallon each second. Another tank has 100 gallons of water and is being drained at a rate of 1/4 gallon each second. Write an equation to determine x, the number of seconds, when the two tanks will have the same amount of water.

Mathematical Equivalence

ON

Monique wants to rent online movies. Movies Plus charges a one-time fee of $20 plus $5 per movie. Movies-To-Go charges $7 per movie. Write an equation to determine x, the number of movies rented when the cost for Movies Plus and Movies-To-Go is the same.

Mathematical Equivalence

ON

Cell Phone Plan A charges $25 per month plus $10 per gigabyte of data. Cell Phone Plan B charges $50 per month plus $5 per gigabyte of data. What number of gigabytes of data results in the same cost for one month?

Mathematical Equivalence

OFF

50 - 2.4x ≥ 8

Mathematical Equivalence

OFF

Tags

CCSS.7.EE.B.4B

7x - 3(x - 1) = 4x + 3

• No solution

• One solution

• Infinitely many solutions

Tags

CCSS.8.EE.C.7A