

1. 
Evaluate if a = 9, b = 6 and c = 3. 


A. 
15 
B. 
9 


C. 
5 
D. 
11 


Hint 


2. 
Evaluate 7 × (a  4) if a = 9. 


A. 
35 
B. 
63 


C. 
59 
D. 
28 


Hint 


3. 
Evaluate ab + 8 if a = 4 and b = 7 


A. 
36 
B. 
28 


C. 
60 
D. 
55 


Hint 


4. 
Evaluate 5k + if k = 3, m = 20, and n. = 5. 


A. 
20 
B. 
7 


C. 
19 
D. 
57 


Hint 


5. 
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. 
20 


C. 
5 
D. 
10 


Hint 


