7.11 Substitution

Front

What is the value of n + 5² when n = 3?

Back

28

Front

How do you evaluate the expression 2(a - 5) + 2 when a = 15?

Back

22

Front

What expression is represented by -4x + 7?

Back

The expression is a linear equation in terms of x.

Front

How do you find the value of 2x - z when x = 3, y = 6, and z = 7?

Back

-1

Front

Which expression is represented by 3x - 2?

Back

The expression is a linear expression in terms of x.

Front

What is the order of operations used in evaluating expressions?

Back

PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction)

Front

What does it mean to substitute a value into an expression?

Back

To replace a variable in an expression with a specific value.

Front

How do you simplify the expression 2(a - 5) + 2?

Back

Distribute 2 to get 2a - 10 + 2, which simplifies to 2a - 8.

Front

What is the result of evaluating 5²?

Back

25

Front

What is the significance of the coefficients in a linear expression like -4x + 7?

Back

The coefficient indicates the rate of change of the variable x.