Review: Evaluating expressions and solving for Y

Evaluate the expression when
x =5    and   z = 4
z²  - 2x

• 6
• 2
• 17
• 26

evaluate bc + 5a  
when  a = 3, b = 4, and c = -6

• 9
• 38
• -38
• -9

Evaluate 5m + 7 if m = 5

• 12

• 25

• 32

Evaluate 3x - 7 if x = 6

• 9

• 11

• 29

• 25

Evaluate 6y - 13 if y = 4

• 51

• 11

• 37

Solve for y: 
3x + y = 12

• y = -3x +12
• x = y + 4
• x = y + 12
• y = 3x -12

Solve for y: 
4x + 3y = 9

• y = -3/4x + 3
• y = -4x + 9
• y = -4/3x + 3
• 3y = -4x + 9

Solve for y
5x - y = 6

• y= 5x-6
• Y= -5X +6
• Y=5X+6
• Y=-5X-6

Solve for y:
7x+ 2y = 20

• y= 7/2x + 10
• y=-7/2x + 10
• y=2/7 x- 10
• y= -2/7x + 10

Solve for y: 
8x + 4y= 16

• y = -8x + 16
• y = 2x -4
• y = -2x + 4
• y = -8x + 12