

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


A. 
5 
B. 
27 


C. 
105 
D. 
23 


Hint 


2. 
Evaluate 5k + if k = 3, m = 20, and n. = 5. 


A. 
20 
B. 
57 


C. 
7 
D. 
19 


Hint 


3. 
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. 
20 
B. 
40 


C. 
10 
D. 
5 


Hint 


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


A. 
43 
B. 
64 


C. 
16 
D. 
12 


Hint 


5. 
Evaluate j  k if j = 10 and k = 2. 


A. 
20 
B. 
5 


C. 
12 
D. 
8 


Hint 


