Provide an appropriate response.
A fisherman wants to know the distance across a river. He sights a tree that he calls point A, and then walks down the river 40 feet at a ninety-degree angle. He then sights the same tree (point A) at an angle of 47°. How wide is the river? 
A. 27 ft
B. 37 ft
C. 43 ft
D. 29 ft
Answer: C
Mathematics
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Express the integrand as a sum of partial fractions and evaluate the integral.
A. -4 ln
+ 
tan-1 
+ C
B. -4 ln
+ 2ln
+ 2ln
+ C
C. - 
+ 2ln
+ 2ln
+ C
D. 4 ln
- 2ln
- 2ln
+ C
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. (-2)2(-2)3
A. -64
B. -32
C. 
D. 
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Solve the equation.(k - 2)2/3 + 4(k - 2)1/3 + 3 = 0
A. {25, 1} B. {25, 0} C. {-1, 1} D. {-25, 1}
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Solve the system of equations. [Hint: Let u = 
and v = 
, and solve for u and v. Then let x = 
, and y = 
.]
A. x = 
, y = - 
; 
B. x = 
, y = -8; 
C. x = - 
, y = 
; 
D. x = -8, y = 
; 
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