Evaluating Algebraic Expressions with PEMDAS

What is the result of evaluating the expression 3x + 2y - 5z when x = 2, y = 3, and z = -5?

• 12

• 6

• 25

• 37

If x = 4, what is the value of the expression x^2 + 3x - 4?

• 28

• 24

• 16

• 32

Evaluate the expression 2x^2 - 5y + 3 when x = 2 and y = 3.

• 4

• 12

• -4

• -12

Using PEMDAS, what is the result of 3(x - 2)^2 + 5 when x = 6?

• 16

• 48

• 24

• 53

What is the first step in evaluating the expression 3(x - 2)^2 + 5 using PEMDAS?

• Evaluate inside the parentheses

• Subtract

• Add

• Multiply

In the expression 2x^2 - 5y + 3, what should be calculated first according to the order of operations?

• -5y

• 2x^2

• +3

• None of the above

What is the value of the expression x^2 - 5(x - y)^3 when x = 6 and y = 3?

• -135

• 135

• 99

• -99

Evaluate the expression x^2 + 5y - 2xy^2 when x = 5 and y = 4.

• 45

• -115

• 160

• 115

What is the simplified form of the fraction 3(5 + 4) / (2*5 - 3*2)?

• All of the above

• 6.75

• 6 3/4

• 27/4

Using the formula for the height of a ball, what is the height after 2 seconds if the initial speed is 45 feet per second and the initial height is 6 feet?

• 32 feet

• 45 feet

• 64 feet

• 96 feet