Find the difference. Simplify the result.
- 
A. 
B. 
C. 
D. 
Answer: D
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Find the Jacobian 
or 
(as appropriate) using the given equations.
A. -6
B. - 
C. 6
D. 
Simplify the expression. If any variables exist, assume that they are positive.-15
+ 17
A. 2
B. 33
C. -3
D. -32
Annual sales (in millions of units) of hand-held computers are expected to grow in accordance with the function
?
?
where 
is measured in years, with 
corresponding to 1997. How many hand-held computers will be sold over the 3-year period between the beginning of 1997 and the end of 1999? Round your answer to two decimal places, if necessary.
Fill in the blank(s) with the appropriate word(s).
Solve.John owns a hotdog stand. He has found that his profit is represented by the function 
with P(x) being profits and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit?
A. 20 hotdogs B. 35 hotdogs C. 41 hotdogs D. 36 hotdogs