One Variable Equations

What equation matches this situation?
Robyn had some video games then bought 4 more.  Now she has a total of 10 games.

• v - 4 = 10

• v + 4 = 10

• 10 - 4 = v

• Answer not Given

In 2010, a tree was 8 feet tall. In 2011 the tree was 14 feet tall. Which equation would be used to find how many feet the tree grew?

• f + 8 = 14

• f - 8 = 14

• f/8 = 14

• 8f=14

Joey and four of his friends went out to eat. They decided to split the bill evenly. Each person paid $11.13. What was the total bill? Write an equation you could use to solve this equation. Use d as your variable.

• d/4=$11.13

• 4d=$11.13

• d/5=$11.13

• 5d=$11.13

Amy was given an amount of money, m, for a good grades on her report card. She spent $15.00 and now has $25.32. How much money did she get for good grades? Write an equation you could use to solve this problem. Use m as your variable.

• m-25.32=15

• m/25.32

• m-15=25.32

• 15m=25.32

How many packages of diapers can you buy with $40 if one package costs $8? (What is the unknown and what would be the equation?)

• n= # of diapers; 8n = 40

• n= # of packages; 8n = 40

• n= # of packages; 8 - n = 40

• n= # of packages; 8/n = 40

Evaluate 8a - b     if a = 10   and   b = 6

• 74

• 38

• 1000

• 9000

Solve the following equation

37 = 12 + x

• x = 25

• x = 49

• x = 3.08

• x = 444

What is the goal for solving equations and inequalities?

• Isolate the variable

• Find the value of the variable

• Inverse operations

• Multiply by the reciprocal

The process for solving equations and inequalities involves what three steps

• 1) Isolate the variable

  2) Inverse Operations

  3) Balance

• 1) Same Signs Add

  2) Different Signs Subtract

  3) Add the opposite

• Multiply by the reciprocal

• Find the value of the variable

What is the inverse operation to solve the following equation

44 = -4x

• Add-4

• Divide by -4

• Multiply by -4

• Subtract by -4