Solve the problem.An experienced accountant can prepare a tax return in 10 hours. A novice accountant can do the job in 16 hours. How long will it take them to do the job working together?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: D
Mathematics
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L'Hopital's rule does not help with the given limit. Find the limit some other way.
A. 0 B. ? C. 4 D. 2
Mathematics
Solve the problem.In the Smoky Mountains of Tennessee, the percent of moisture that falls as snow rather than rain is approximated by 
, where P is the percent of snow moisture at an altitude h feet. What altitude corresponds to 7 percent snow moisture?
A. about 109,700 feet B. about 3300 feet C. about 1000 feet D. about 6000 feet
Mathematics
Decide whether the ordered pair is a solution of the given system.(-5, 3)2x + y = -73x + 2y = -9
A. No B. Yes
Mathematics
A graph of y = f(x) follows. No formula for f is given. Graph the given equation.y = 2f(x)
?
A. 
B. 
C. 
D. 
Mathematics