Algebra, Equations & Inequalities Study Guide Part 1

Write an expression for this phrase.

• 2c

• 2 + c

• 2 - c

Write an expression for this phrase.

• n - 5

• 5 - n

Write an expression for this phrase.

• 7 - n

• n - 7

• 7 + n

Write an expression for this phrase.

• 3 + x

• x + 3

• 3 - x

• 3x

Evaluate the expression if a = 7, b = 9 and c = 2.

On paper, show your substitution and each step.

• 15

• 25

• 125

• 5

Evaluate the expression if a = 7, b = 9 and c = 2.

On paper, show your substitution and each step.

• 21

• 6

• 33

• 27

Evaluate the expression if a = 7, b = 9 and c = 2.

On paper, show your substitution and each step.

• 61

• 95

Which of the following expressions is true for all values in the table?

• x + 3

• 3x - 1

• 2x + 1

Yonni balanced a scale as shown. How many circles are equal to one square?

• 3

• 8

• 11

• 14

What can be done to find the value of x in the equation 5x = 75 ?

• Multiply both sides of the equation by 5.

• Subtract 5 from both sides of the equation.

• Add 5 to both sides of the equation.

• Divide both sides of the equation by 5.