Pre Algebra

Which property states that when you multiply any number by 1, the product is the same as the original number?

• Identity Property of Multiplication

• Commutative Property of Addition

• Associative Property of Addition

• Distributive Property

What is the value of x in the equation 2x + 9 = 21?

• 6

• 11

• 15

• 7

What is the value of 4x + 7y when x = 3 and y = 2?

• 29

• 15

• 35

• 29

What is the value of 5(x - 2) when x = 7?

• 15

• 35

• 21

• 15

What is the value of y in the equation 5y - 8 = 17?

• 5

• 12

• 3

• 5

Which of the following is an algebraic expression?

• 9x + 3

• 9 + 3

• 12 - 4

• 5 + 2

Evaluate the expression for y = 2: 3y^2 - 4y + 1

• 9

• 5

• 12

• 4

Which property states that the product of any number and 0 is always 0?

• Zero property

• Zero property

• Associative property

• Distributive property

Which of the following is a numerical expression?

• 7 + 3

• 4y + 2

• 2x^2 - 5x

• 7x - 3

What is the difference between a variable and a constant?

• A variable is a symbol used to represent an unknown value or quantity, while a constant is a value that does not change.

• A variable and a constant are the same thing.

• A variable is a value that does not change, while a constant represents an unknown value.

• A variable is a value that changes, while a constant is a known value.