Substitute Variables Quiz

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

• 15

• 8

• 10

• 11

Evaluate the expression when y = 4: 3y - 2

• 10

• 6

• 14

• -2

Evaluate the expression when a = 2 and b = 5: 4a + 2b

• 12

• 22

• 35

• 18

Evaluate the expression when x = 1 and y = 2: 3x + 2y

• 7

• 10

• 5

• 8

Solve the equation for x: 2x + 7 = 15

• 6

• 3

• 4

• 8

Solve the equation for y: 3y - 5 = 16

• -7

• 9

• 2

• 7

Solve the equation for a: 4a + 3 = 19

• 6

• 5

• 4

• 7

Solve the equation for b: 5b - 8 = 27

• 10

• -7

• 15

• 7