Unit 1 Review Part 2 HW

Front

What is a variable in an expression?

Back

A variable is a symbol (usually a letter) that represents an unknown value in an expression or equation.

Front

Identify the variable in the expression 5y + 7.

Back

y

Front

What is the quotient of seven and a number represented as an expression?

Back

Front

Evaluate the expression 4(x^2 + 4) when x = 3.

Back

52

Front

What is the value of 4x when x = 5?

Back

20

Front

What is the greatest common factor (GCF) of 48 and 54?

Back

6

Front

How do you represent the expression for the sum of a number x and 7?

Back

x + 7

Front

What is the expression for the difference between a number x and 4?

Back

x - 4

Front

If x = 2, what is the value of the expression 3x + 5?

Back

11

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their given values.