Factor.x3 - 343
A. (x + 7)(x2 - 7x + 49)
B. (x - 7)(x2 + 7x + 49)
C. (x + 343)(x2 - 1)
D. (x - 7)(x2 + 49)
Answer: B
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Use logarithmic differentiation to find the derivative of y.y = 
A. 
B. 
C. 
+ cot x - 
D. 
Find the LCM for the given numbers by an appropriate method.60, 40, and 70
A. 120 B. 420 C. 840 D. 280
The population aged 65 years old and older (in millions) from 2000 to 2050 is projected to be
?
?
where 
is measured in decades, with 
corresponding to 2000. What will be the average population aged 65 years and older over the years from 2000 to 2040?
(Hint: The average population is given by 
. Multiply the integrand by 
and then use the method of substitution.) Please round your answer to one decimal place.
?
__________ million
Fill in the blank(s) with the appropriate word(s).
For the polynomial, list each real zero and its multiplicity. Determine whether the graph crosses or touches the x-axis at each x -intercept.f(x) = 
4(x2 + 6)3
A. - 
, multiplicity 4, touches x-axis; -6, multiplicity 3, crosses x-axis
B. - 
, multiplicity 4, crosses x-axis
C. 
, multiplicity 4, touches x-axis; 6, multiplicity 3, crosses x-axis
D. - 
, multiplicity 4, touches x-axis