Substituting Numbers for Variables

Evaluate the expression 3x + 5 when x = 2.

• 11

• 13

• 9

• 7

Simplify the expression 2x + 3y - 4x + 2y when x = 1 and y = 4.

• -2x + 5y - 2

• -2x + 5y

• -2x + 5y + 2

• -2x + 5y + 6

Substitute the value x = 3 into the expression 2x^2 - 5x + 1.

• 0

• 4

• 7

• -2

Evaluate the expression 4(x + 2) - 3 when x = 5.

• 17

• 32

• 12

• 25

Simplify the expression 3(x - 2) + 2(x + 1) when x = -1.

• -5

• -7

• -11

• -9

Substitute the value y = 2 into the expression 3x^2 - 2xy + 5y^2.

• 3x^2 - 8x + 20

• 3x^2 - 2x + 10

• 3x^2 - 4x + 15

• 3x^2 - 6x + 25

Evaluate the expression 2(x - 3)^2 + 4 when x = 4.

• 10

• 6

• 14

• 18

Simplify the expression 5x - 2y + 3x + 4y when x = 2 and y = 1.

• 12

• -18

• 22

• 18

Substitute the value x = -2 into the expression 4x^3 - 2x^2 + 3x - 1.

• -9

• 5

• 0

• -47

Evaluate the expression 2(x + 3) - 5 when x = -1.

• -7

• 0

• 5

• -1