Find the right part of the identity.
?
__________
?
A. cot ?
B. csc ?
C. tan ?
D. cos ?
E. sin ?
Answer: A
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Simplify.
+ 
A. 
B. 
C. 1
D. 
Solve the problem.A musician plans to perform 5 selections for a concert. If he can choose from 7 different selections, how many ways can he arrange his program?
A. 21 B. 35 C. 16,807 D. 2520
Solve the problem.Quail are game birds that fare poorly when their habitat is encroached upon. Wildlife biologists have discovered that the population P of quail in a region is related to the percent of the region that has been paved with roads and parking lots, according to the formulaP = k ln
, 0 ? x ? 30,where x is the percent of the region that has been paved. For a particular rural region, 
when 
Predict what the quail population will be in
this region when it becomes 5% paved. Round your answer to the nearest whole number. A. 1041 quail B. 1083 quail C. 1030 quail D. 0 quail
Solve the problem.Martha can rake the leaves in her yard in 5 hours. Her brother can do the job in 4 hours. How long will it take them to do the job working together?
A. 
hr
B. 
hr
C. 20 hr
D. 
hr