For the function f, construct and simplify the difference quotient 
.f(x) = 
A. 
B. 
C. 
D. - 
Answer: A
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Find the volume of the described solid.The base of the solid is the disk x2 + y2 ? 4. The cross sections by planes perpendicular to the 
between 
and 
are isosceles right triangles with one leg in the disk.
A. 
B. 
C. 
D. 
Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
? y = x2 y = 
A. Since limx?1+ f '(x) = 
while limx?1- f '(x) = 2, f(x) is not differentiable at 
B. Since limx?1+ f '(x) = 
while limx?1- f '(x) = 1, f(x) is not differentiable at 
C. Since limx?1+ f '(x) = 2 while limx?1- f '(x) = 
, f(x) is not differentiable at 
D. Since limx?1+ f '(x) = 2 while limx?1- f '(x) = 2, f(x) is differentiable at 
Solve the problem.Suppose you purchase a eight-year bond with an APR of 
%. The face value of the bond is $6210. Find the purchase price of the bond.
A. $4713.75 B. $3445.41 C. $3465.99 D. $3366.96 E. $4500
Find the capacity of the container, when ?a? = 20, ?b? = 15, ?c? = 30.
?
?
A. 15 L B. 10 L C. 12 L D. 13 L E. 9 L