

1. 
Ten years ago, Mary invested $2500. Four years later, she invested $3000. Set up an equation that determines the current value of the two investments T(x) if each earns 10% annual interest per year. 


A. 
T(x) = 3000(1.0)^{10} + 2500(1.1)^{6} 
B. 
T(x) = 3000(1.0)^{10} + 2500(1.1)^{4} 


C. 
T(x) = 2500(1.1)^{10} + 3000(1.1)^{4} 
D. 
T(x) = 2500(1.1)^{10} + 3000(1.1)^{6} 


Hint 


2. 
State the degree of the polynomial function f(x) = x^{4}  2x^{2} + 3x  1. 


A. 
2 
B. 
4 


C. 
3 
D. 
5 


Hint 


3. 
Determine the zeros of the function y = x^{3} + 2x^{2}  5x  6. 


A. 
3, 1, 2 
B. 
1, 2, 3 


C. 
3, 1, 4 
D. 
3, 2, 0 


Hint 


4. 
Write a polynomial equation of least degree with roots 1, 2i, and 2i. 


A. 
x^{3} + x^{2}  4x + 4 = 0 
B. 
x^{3} + x^{2} + 4x + 4 = 0 


C. 
x^{3}  x^{2} + 4x + 4 = 0 
D. 
3x + x^{2} + 4x  4 = 0 


Hint 


5. 
In the equation x^{3} + x^{2} + 4x + 4 = 0, how many times does the graph of the related function cross the xaxis? 


A. 
3 
B. 
1 


C. 
0 
D. 
2 


Hint 

