Evaluate the determinant.
A. -102
B. -72
C. 72
D. 42
Answer: B
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Solve. 12r2 = 3r
A. 
B. 0, 
C. 0, 4
D. 0
Provide an appropriate response.You have two investment opportunities. You can invest $6000 at 12% compounded monthly or you can invest $6100 at 12.1% compounded quarterly. Which has the better effective rate of interest? Use a graphing calculator to graph both amounts as a function of time in years. Which is the better investment over twenty years?
What will be an ideal response?
Solve. Simplify the answer.Erika spent 
hr on her computer visiting the History Channel and the Discovery Channel websites. She spent 
hr at the History Channel website. How many hours did she spend at the Discovery Channel website?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Find a unit vector u in the direction of the given vector.
A. 
B. 
C. 
D. 