Find Dxy.y = -2x3 tanh 
A. -6x2 tanh 
+ 4 sech 
B. -6x2 tanh 
+ 2 sech2 
C. -6x2 tanh 
- 4 sech2 
D. -6x2 tanh 
+ 4 sech2 
Answer: D
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Estimate the slope of the curve at the indicated point.
A. 1 B. -1 C. Undefined D. 0
Multiply and reduce answers to lowest terms. Write improper fractions as whole or mixed numbers.
? 
A. 
B. 
C. 
D. 
Use the frequency polygon to answer the following.The frequency polygon shows the salaries of employees of a small company.
The greatest number of employees are in which salary group?
A. $50,000-$60,000 B. $30,000-$35,000 C. $50,000-$55,000
One interesting property of the function f(x) = ex is that its rate of change for any value x is simply equal to ex. Find the rate of change of f(x) = ex for the given value of x. Round to the nearest hundredth.x = 6.7
A. 1998.20 B. 812.41 C. 1895.02 D. 852.93