

1. 
Use Pascal's triangle or the Binomial Theorem to expand (x + 3y)^{3}. 


A. 
x^{3}  3x^{2}y + 3xy^{2} y^{3} 


B. 
x^{3}  9x^{2}y + 27xy^{2} 27y^{3} 


C. 
x^{3} + 3x^{2}y  3xy^{2} + y^{3} 


D. 
x^{3} + 9x^{2}y  27xy^{2} + 27y^{3} 


Hint 


2. 
A coin is flipped six times. Find the number of possible sets of heads and tails that have at least 5 heads. 


A. 
5 
B. 
7 


C. 
1 
D. 
6 


Hint 


3. 
Find the middle term of the expansion of . 


A. 

B. 



C. 

D. 



Hint 


4. 
Use Pascal's Triangle or the Binomial Theorem to expand (3x  2y)^{5}. 


A. 



B. 



C. 



D. 



Hint 


5. 
Find the sixth term of 


A. 
21h^{2}k^{5} 
B. 
21h^{2}k^{5} 


C. 
42h^{2}k^{5} 
D. 
42h^{2}k^{5} 


Hint 

