Write the expression as a difference of two logarithms.ln 
A. ln 4 + ln 5
B. ln 4 - ln 5
C. ln 5 - ln 4
D. ln(4 - 5)
Answer: B
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Find the extreme values of the function subject to the given constraint.
A. Maximum: 3 at 
minimum: -3 at 
B. Maximum: 3 at 
and 
minimum: -3 at 
and 
C. Maximum: 3 at 
minimum: -3 at 
D. Maximum: 3 at 
minimum: -3 at 
Use the given information to find the exact value of the trigonometric expression.cos ? = 
; 
< ? < 2?
Find sin(2?).
A. - 
B. 
C. - 
D. 
Solve the equation.3(3x - 6 ) = 27
A. {3}
B. 
C. {-3}
D. {9}
Solve the problem.An express train travels 360 miles between two cities. During the first 
of a trip, the train traveled through mountainous terrain. The train traveled 
per hour slower through mountainous terrain than through level terrain. If the total time to travel between the cities was 9 hours, find the speed of the train on level terrain.
A. 30 mph B. 60 mph C. 45 mph D. 15 mph