

1. 
Evaluate 3x + 2y if x = 3 and y = 7. 


A. 
27 
B. 
5 


C. 
23 
D. 
105 


Hint 


2. 
Evaluate if a = 9, b = 6 and c = 3. 


A. 
9 
B. 
15 


C. 
5 
D. 
11 


Hint 


3. 
Evaluate 7 × (a  4) if a = 9. 


A. 
59 
B. 
28 


C. 
63 
D. 
35 


Hint 


4. 
In physics, the number measures the force of gravity between two objects when a and b each stand for the mass one of the objects and d stands for the distance between them. Find the force of gravity when a = 5, b = 8, and d = 2. 


A. 
40 
B. 
10 


C. 
20 
D. 
5 


Hint 


5. 
Evaluate y^{3} if y = 4. 


A. 
12 
B. 
43 


C. 
64 
D. 
16 


Hint 


