Algebra 1; Quiz 1.1

Write an algebraic expression for 12 less than a number times 7.

• 12 < 7n

• 12 > 7n

• 12 – 7n

• 7n – 7

Evaluate 20 + 3(8 – 5).

• 29

• 39

• 180

• 26

Evaluate the expression if a = 4, b = 6, and c = 2.

ab – c

• 12

• 16

• 22

• 8

Evaluate the expression if a = 4, b = 6, and c = 2.

3a² + b²c

• 36

• 84

• 96

• 240

Simplify 4(w – 9)

• 4w – 9

• 4w – 13

• w – 5

• 4w – 36

Simplify 3r + 2(t + 5r).

• 15r + 2t

• 8r + 2t

• 15r

• 13r + 2t

Name the property used in (5 + 2) + n = 7 + n.

• Additive Identity

• Multiplicative Identity

• Reflexive Property

• Substitution Property

Name two properties used to evaluate 7 • 1 – 4 • ¹/₄.

• Multiplicative Identity and Multiplicative Inverse

• Commutative and Associative

• Additive Identity and Additive Inverse

• Reflexive and Transitive

Write a verbal expression for x² – 5

• 5 decreased by a number cubed

• a number squared less 5

• a number decreased by 5

• a number cubed decreased by 5

Evaluate the expression.

• 12

• 24

• 2

• 6