Solve the problem.A steel can in the shape of a right circular cylinder must be designed to hold 450 cubic centimeters of juice (see figure). It can be shown that the total surface area of the can (including the ends) is given by S(r) = 2?r2 + 
, where r is the radius of the can in centimeters. Using the TABLE feature of a graphing utility, find the radius that minimizes the surface area (and thus the cost) of the can. Round to the nearest tenth of a centimeter. 
A. 4.2 cm
B. 3.4 cm
C. 0 cm
D. 5.4 cm
Answer: A
Mathematics
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Use L'H
pital's rule to find the limit.
A. ?
B. 0
C. 7
D. 
Mathematics
Provide an appropriate response.Here is an argument that ln 2 = ? - ?. Where does the argument go wrong?ln 2 = ln 1 + ln 2 = ln 1 - ln 
= 
ln 
- ln 
= 
-25.0px;" /> = 
= 
dx= 
dx= 
dx - 
dx= 
- 
= ? - ?
What will be an ideal response?
Mathematics
Find the equation of the least-squares regression line. Graph the line and data points on the same graph.
A. y = -0.2 + 1.75x
B. y = 6.01 + 2.2x
C. y = 9.3 + 0.95x
D. y = 10.1 + 1.67x
Mathematics
Write the vector v in the form v1i + v2j, given 
and the angle ? that v makes with the positive x-axis.
= 11, ? = 150°
A. 
i + 
j
B. 
i - 
j
C. - 
i + 
j
D. 11i + 
j
Mathematics