Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (9, 1, -1) for ln 
- exy+z2 = 0.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The value, in dollars, of a copy machine is given by the function 
where x is the number of years that have passed since the machine was purchased. Interpret the slope of the graph of f as a rate of change.
A. The copy machine increases in value by $210 each year. B. The copy machine increases in value by $420 each year. C. The copy machine decreases in value by $210 each year. D. The copy machine decreases in value by $420 each year.
Mathematics
Solve.
- 
= 0
A. 
B. 
C. 
D. 
Mathematics
Solve.In how many ways can 8 people line up for play tickets?
A. 8 B. 40,320 C. 16,777,216 D. 1
Mathematics