Substitute Values into a Formula

Evaluate 8a - b     if a = 10   and   b = 6

• 74

• 38

• 1000

• 9000

Evaluate m² + 12q if m = 5 and q = -3

• 10

• -25

• -11

• 13

Evaluate when a = 15:
2(a - 5) + 2

• 22

• 27

• 14

• 7

You are given the equation
2x + 3y = 6
Substitute the values (3, 0) into the equation. Which equation below shows a correct substitution?

• 2(0) + 3(3) = 6

• 2(3) + 3(0) = 6

• 3x + 0y = 6

• 2(3x) + 3(0y) = 6

If x = -3, in the equation -2x + y = 15, what is y? Type in the number.

2x + 3 + x²; for x = 4

• 17

• 27

• 19

• 25

8y + 12 - 2z
for y = 4 and z = 2

• 40

• 20

• 84

• 34

Evaluate when x = 2 and y = 5:
2 + (12 - 5x) ⋅ 2y

• 22

• 40

• 142

• -86