Evaluating the Expression

Evaluate this expression:
3(4)²

• 144

• 48

• 24

• None of these

Evaluate this expression:
(-2)² - (-5)²

• -21

• 29

• 21

• -29

Evaluate this expression
-3² - 5(2)(-3)

• -21

• 21

• 39

• -39

3r + 2e; r = 3  e = 2

• 15

• 13

• 54

• 12

What is the value of x?
3x + 4 when x = -2

• 10

• 2

• -2

• 4

Simplify the following:
-2 ⋅ (3 + 8 ÷ 4)²

• -16

• 1.375

• 4

• -50

Simplify the following:  
-8 + (15 - 3) ÷ 4

• -5

• 1

• -11

• 11

x² - (x - y)² ⋅ y        
 
If x = -5 and y = -8

• -47

• 1377

• -128

• 97

r³ + 2s²    
 if r = -3  and s = 4

• 59

• 5

• 37

• 91

Solve the following:
91 + 27 ÷ (72 ÷ 24)

• 100

• 96

• 90

• 127