Evaluate. Assume u > 0 when ln u appears. 
A. 
(3 + 4x3)5/4 + C
B. - 
(3 + 4x3)-3/4 + C
C. 
(3 + 4x3)5/4 + C
D. 4(3 + 4x3)5/4 + C
Answer: C
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Determine all critical points for the function.y = 4x2 - 128
A. x = 0, x = 4, and x = -4 B. x = 0 C. x = 0 and x = 4 D. x = 4
Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.tan 2x - tan x = 0
A. 
, 
B. 0
C. 0, ?
D. 
, 
, 
, 
, 
, 
, 
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (72)-1
A. 
B. - 
C. -14
D. -49
Solve the problem.Median family income in Country X between 1990 and 1999 can be modeled by 
where x is the year. Determine symbolically when the median income was $42,216.
A. x ? 1998 B. x ? 2000 C. x ? 1994 D. x ? 1996