Sketch D and g(D) from the description of D and change of variables 
u = xy, v = 
where D is the rectangle 1 ? x ? 4, 
? y ? 2
?
A.
 ? |  |
B. None of these.
C.
 ? |  |
D.
 ? |  |
Answer: D
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Solve.Approximately 19.3% of all students at a city college commute to school. Write this percent as a fraction or mixed number in simplest form.
A. 1
B. 
C. 19
D. 
What term of the arithmetic sequence is the given number?
, 
, - 
, . . . ; - 
A. 32 B. 35 C. 33 D. 30
Simplify the expression. Assume that all variables are positive when they appear.
? 
A. -24 B. 24 C. 11 D. -5
Answer the question about the given function or graph of a function. 
Find any local minimum of f.
A. Local minimum of -2.5 at x = -3.3 and local minimum of 5 at x = -2.5 B. Local maximum of -2.5 at x = -3.3 and local maximum of 5 at x = -2.5 C. Local maximum of -3.3 at x = -2.5 and local maximum of -2.5 at x = 5 D. Local minimum of -3.3 at x = -2.5 and local minimum of -2.5 at x = 5