Algebra 1 Review QUIZ 1

Which statement cannot be justified by one of the properties of real numbers?

• (a + b) + c = a + (b + c)

• a – (b ÷ c) = (a – b) ÷ c

• (ab)c = a(bc)

• (a + b) + 0 = 0 + (a + b)

The statement "If 1/2 x = 5, then x = 10" is justified by the –

• Associative property of multiplication

• Commutative property of multiplication

• Addition property of equality

• Multiplication property of equality

Which property justifies rewriting 3x – 5x as (3 – 5)x?

• Associative Property of Multiplication

• Distributive Property

• Commutative Property of Multiplication

• Associative Property of Addition

Plot the point on the number line that corresponds to the value of the expression below. ∛125

• 5

• 3

• -5

• 0

Joe, who is the youngest member of the wrestling team at Northwood High School, is 5 years less than one-half the age of the coach. If the coach is n years old, which expression describes Joe’s age?

• 1/2 n – 5

• 5 – 1/2 n

• 2n + 5

• 2n – 5

• -4

• 6

• -2

• 4

Find the value of the expression below when x = –4 and y = 2

–3x²y + 4x

• –40

• 12

• 24

• –112

The formula for the surface area of a cylinder is SA = 2πr(h + r). What is the surface area of a cylinder when r = 3 centimeters and h = 4 centimeters?

• 28π cm²

• 32π cm²

• 36π cm²

• 42π cm²

• n = -14

• n = 14

• n = 7

• n = -7

Find the solution to the equation below. 5(x + 2) = 7(4 - x)

• -9.0

• 1.5

• 3.2

• 9.0