Determine whether the relation defines y as a function of x. Give the domain.xy = 9
A. Not a function; domain: (-?, 0) ? (0, ?)
B. Function; domain: (-?, 0) ? (0, ?)
C. Function; domain: (-?, ?)
D. Not a function; domain: (-?, ?)
Answer: B
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Find Dxy.y = (2 - 2x) tanh-1 x
A. 
- 2 tanh-1 x
B. 
- 2 tanh-1 x
C. 
D. 
- 2 tanh-1 x
Estimate the indicated probability by using the normal distribution as an approximation to the binomial distribution.Two percent of flat irons produced at a certain plant are defective. Estimate the probability that of 10,000 randomly selected flat irons, the number of defectives is between 195 and 210 inclusive.
A. 0.3989 B. 0.4017 C. 0.4251 D. 0.4034
Simplify the expression and write the answer without negative exponents.x7 ? x-2
A. x5
B. -x5
C. - 
D. 
Find the average rate of change for the function between the given values.f(x) = 
; from 2 to 8
A. 7
B. - 
C. 
D. 2