Factor the expression completely. If the polynomial is prime, state this as your answer.x4 - 16
A. (x2 + 4)(x + 2)(x - 2)
B. (x2 + 4)(x2 + 4)
C. prime
D. (x2 - 4)(x2 - 4)
Answer: A
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Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. 2 ln 
+ ln 
+ C
B. 2 ln 
+ ln 
- 
+ C
C. 7 ln 
+ ln 
+ C
D. 2 ln 
- 
+ C
Postal regulations specify that a parcel sent by parcel post may have a combined length and girth of no more than 90 in.
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Find the dimensions of a rectangular package that has a square cross section and the largest volume that may be sent through the mail. Hint: The length plus the girth is 
(see the figure).
?
Dimensions: _____ x _____ x _____
?
?
?
What is the volume of such a package?
?
What will be an ideal response?
Solve the problem.Below is a table of data from a survey given to 1600 teenagers asking them to estimate what percentage of their classmates are using drugs. Find the probability that a randomly selected girl thinks that 50% or more of her classmates are using drugs. Round your answer to the nearest hundredth.
A. .17 B. .08 C. .10 D. .21
Use Method II to simplify the complex rational expression.
A. 
B. 
C. 
D. 