The graph of a function f is given. Use the graph to answer the question. 
Find the numbers, if any, at which f has a local minimum. What are the local maxima?
A. f has a local maximum at x = -2.5 and 5; the local maximum at -2.5 is -3.3; the local maximum at 5 is -2.5
B. f has a local minimum at x = -3.3 and -2.5; the local minimum at -3.3 is -2.5; the local minimum at -2.5 is 5
C. f has a local minimum at x = -2.5 and 5; the local minimum at -2.5 is -3.3; the local minimum at 5 is -2.5
D. f has a local maximum at x = -3.3 and -2.5; the local maximum at -3.3 is -2.5; the local maximum at -2.5 is 5
Answer: C
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and 
and by the lines 
and 
A. 
= 
, 
= 0
B. 
= 
, 
= 0
C. 
= 
, 
= 0
D. 
= 0, 
= 
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, and the plane 
A. 4500 B. 2250 C. 2000 D. 6000
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and that the exponential model applies, find the value of k rounded to the hundredths place, and write the function.
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