Provide an appropriate response.What is the difference between ln a and log a?
What will be an ideal response?
Answers may vary. One possibility: The base of ln a, the natural logarithm, is e (a universal constant and irrational number that is approximately equal to 2.71828). The base of log a, the common logarithm, is 10. It is especially useful because our number system uses base 10. "ln" is only used with base e. "log" can be used with any base, but if no base is specified (as in log 
, then its base is assumed to be 10.
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Write a formula for the nth term of the given geometric sequence. Do not use a recursion formula.
, 
, 
, 
, ...
A. an = 
- 
(n - 1)
B. an = 
n - 1
C. an = 
n - 1- 
D. an = 
+ 
(n - 1)
Provide an appropriate response.Mentally divide by using powers of 10: 240 ÷ 10
A. 2.4 B. 24 C. 0 D. 2,400
The following double-bar graph illustrates the revenue for a company for the four quarters of the year for two different years. Use the graph to answer the question. 
Which quarter for 2010 had the greatest increase in revenue compared to the same quarter for 2009?
A. third quarter B. first quarter C. fourth quarter D. second quarter
Evaluate the logarithm to four decimal places.ln 251
A. 5.5255 B. 0.1804 C. 2.3997 D. 92.6199