Rationalize the denominator. Assume that all variables represent positive real numbers.- 
A. -24
B. - 
C. - 
D. -5
Answer: C
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Integrate the given expression.
dx
A. x + 7C
B. -21x + C
C. 7x3 + C
D. - 
+ C
Solve the equation for the indicated variable.V = 
Bh, for h
A. h = 
B. h = 
C. h = 
D. h = 
Solve the problem.Raul, who is 1.98 m tall, wishes to find the height of a tree. He walks 19.03 m from the base of the tree along the shadow of the tree until his head is in a position where the tip of his shadow exactly overlaps the end of the tree top's shadow. He is now 7.45 m from the end of the shadows. How tall is the tree? Round to the nearest hundredth.
A. 3.25 m B. 7.04 m C. 5.06 m D. 0.78 m
Solve the problem.The distance d in miles that can be seen on the surface of the ocean is given by 
where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of 18.5 miles?
A. 445 ft B. 342 ft C. 203 ft D. 142 ft