#20A Evaluating Expression with Substitution

Front

What is substitution in evaluating expressions?

Back

Substitution is the process of replacing a variable in an expression with a specific value to simplify or evaluate the expression.

Front

Evaluate 5x + 3y if x = 4 and y = 2.

Back

26

Front

What is the formula for the area of a square?

Back

The area A of a square is given by the formula A = s^2, where s is the length of a side.

Front

What is the area of a square with a side length of 11 inches?

Back

121 square inches

Front

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

Back

22

Front

What is the expression for the area of a rectangle?

Back

The area A of a rectangle is given by the formula A = length × width.

Front

Back

3

Front

Evaluate 4y if y = 3.

Back

12

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 respective values.

Front

What is the value of x in the expression 3x + 4 = 10?

Back

x = 2.