Expressions in the Real World

What is the value of the expression

x² + y² + x - y

when x = 1 and y = 3

• 6

• 8

• 5

• 16

evaluate bc + 5a

when a = 3, b = 4, and c = 6

• 39

• 61

• 87

• 9

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

• 9
• 38
• -38
• -9

a²-b² Evaluate if a=4 and b =2

• 4

• 20

• 16

• 12

Evaluate 2a + 4b 
if a = 10     and    b = 6

• 20
• 24
• 44
• 4

Evaluate when a = 15:
2(a - 5) + 2

• 22
• 27
• 14
• 7

b² + 4
when b = 3

• 10
• 12
• 13
• 11

Evaluate the expression.   Let g = 3    h = 9 
4h + 2g + 4

• 42
• 46
• 34
• 58

If p = -6, what does p + 4 equal?

• 10
• -2
• -24
• -3

½(10p - 7q) if p = 9 and q = 2

• 31

• 38

• 52

• 152