Solve the problem.An experienced accountant can prepare a tax return in 16 hours. A novice accountant can do the job in 21 hours. How long will it take them to do the job working together?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: C
Mathematics
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Find the total outside surface area and volume of the following solid object. If necessary, round to the nearest whole number unless otherwise directed. (Assume that the base is regular.)
A. T = 3545 m2, V = 13,585 m3 B. T = 3545 m2, V = 13,593 m3 C. T = 3425 m2, V = 13,593 m3 D. T = 3425 m2, V = 13,585 m3
Mathematics
Find the indicated sum.
A. 108 B. 54 C. 36 D. 72
Mathematics
Solve the exponential equation algebraically. Approximate the result to three decimal places.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Graph on a plane.-5 ? x ? 6
A. 
B. 
C. 
D. 
Mathematics