Evaluate Algebraic Expressions Multivariable

Evaluate 4n - n² for n = -3.

• -21

• -3

• 8

• -7

Evaluate (2y - 5)² for y = -2.

• -25

• 25

• -81

• 81

Evaluate 3a² - ab when a = -1 and b = 3.

• 12

• -5

• 6

• 0

Let t = 3 and u = -5. Evaluate 3t - u².

• -19

• 31

• 34

• -16

The length of a rectangle is represented by (5x - 3) and the width is (x + 3). If x = 2, then which of the following values is the actual perimeter of this rectangle?

• 18

• 14

• 24

• 20

A rectangle has a dimension that is represented by (2c + 1) and another dimension that is (3 + c). If c = 3, then that is the actual area of this rectangle?

• 13 square units

• 42 square units

• 36 square units

• 12 square units

Let p = 0.5 and q = 1.5. Evaluate 4p² - 4q.

• 2

• -5.75

• 7

• -5

Evaluate (3x - 4)(x + 8) when x = 2.

• -20

• 100

• 20

• 12

Let x = 4 and y = 3. Evaluate 3x - 4y.

• 6

• 0

• 2

• -12

Write an algebraic expression for the word phrase.
12 more than (m) machines

• 12-m

• m-12

• 12+m

• m+12