Evaluate Expressions

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.

Front

Evaluate the expression: 2r + 1 if r = 3.

Back

7

Front

What is the formula for evaluating a quadratic expression?

Back

For an expression like n^2 + 7, substitute n with its value and calculate.

Front

Evaluate the expression: r(r - 9) when r = 11.

Back

22

Front

Back

3

Front

Evaluate the expression: 2(a - 5) + 2 when a = 15.

Back

22

Front

What is the result of n^2 + 7 when n = 3?

Back

16

Front

What is a variable in an expression?

Back

A variable is a symbol (like x or r) that represents a number that can change.

Front

What does it mean to substitute in an expression?

Back

To substitute means to replace a variable with a specific value.

Front

Evaluate the expression: 5x - 3 if x = 4.

Back

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