8th grade warm up

Solve the equation
4x - 5x + 9 =5x - 9

• x = -3
• x = 9
• x = 3
• x = -9

14p - 8 = 22 + 20p

• -5

• 5

• 30

• -30

Rhonda bought five shirts from a store and had $10 left. If she had only bought three shirts, she would have had $24 left. If each shirt costs the same, which of the following equations could be used to determine x, the cost of each shirt, in dollars?

• 10 - 5x = 24 - 3x

• 5x + 3x = 10 + 24

• 10 + 5x = 24 +3x

• 5 + 10x = 3 + 24x

Write the equation of this model

• 4 = 9

• 2x + 2 = x + 8

• 2 + 2 = 1 + 8

• 2x + 1 = x + 1