Solve Equations

4 + b = 30

• -34

• 34

• -26

• 26

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 

• Subtract 62 from each side.

• Multiply each side by 62.

• Add 123 to each side.

The area of a rectangular deck is 125 square feet. The width of the deck is 25 feet. Write an equation and solve to find the length.

• 25x=125,
  x = 5 feet

• x+22=125,
  x = 20 feet

• x-25=125
  x=150 feet

• 25x=125
  x=3,125 feet

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

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

Solve:
7x - 3x - 8 = 24

• 8

• -8

• 3.2

• 4

What is the solution of 7x= 42

• 294

• 49

• 35

• 6

Determine the value of m in the equation m - 2.2 = 2.5.

• 3.7

• 0.3

• 4.7

• 0.5