Find the unit vector that has the same direction as the vector v.v = 8i
A. u = 
i
B. u = i
C. u = 8i
D. u = 64i
Answer: B
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Solve the problem.Matthew has $2500 invested in the stock market. This amounts to 40% of his total savings. How much has Matthew saved?
A. $6260 B. $62,500 C. $6350 D. $6250
Factor completely.3x6 - 30x5 + 72x4
A. x4(3x - 18)(x - 4) B. x4(x - 6)(3x - 12) C. 34(x2 - 10x + 24) D. 3x4(x - 6)(x - 4)
Divide using long division.
A. r2 + 2r + 8
B. 3r2 + 8r + 
C. 3r2 + 8r + 2
D. 3r2 - 8r - 2
Use a graphing calculator to determine which expression completes the identity.The expression 
+ 
is to be the left hand side of an equation that is an identity. Which one of the following four expressions can be used as the right hand side of the equation to complete the identity?
A. tan2 x B. 1 - cos x C. 3 sec x D. 2 sec2 x