Substitution in Algebra

Evaluate 4x^2 + 3 when x = 2.

• 15

• 22

• 10

• 19

Substitute y = 4 into the expression 3y - 7. What is the result?

• 2

• 5

• -1

• 10

If a = 2 and b = 5, what is the value of 4a + 3b?

• 20

• 30

• 23

• 15

If p = 10, what is the value of 2p + 3?

• 23

• 30

• 15

• 20

If c = 1 and d = 8, what is the value of 5c + 2d?

• 15

• 21

• 10

• 30

If z = -3, what is the value of 2z + 9?

• 3

• 6

• -3

• 0

Substitute k = 5 into the expression k^2 - 4k + 1. What is the result?

• 10

• 5

• 6

• 0

Evaluate the expression 6a - 3b when a = 4 and b = 2.

• 18

• 6

• 12

• 24

If x = 1, what is the value of x^3 + 2x^2 - x?

• 2

• 0

• 3

• -1

Substitute t = 3 into the expression 5t - 2t^2. What do you get?

• -3

• 6

• 1

• -10