If the function is one-to-one, find its inverse. If not, write "not one-to-one."f(x) = 6x3 + 4
A. not a one-to-one
B. f-1(x) = 
C. f-1(x) = 
- 4
D. f-1(x) = 
Answer: D
Mathematics
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A PDF for a continuous random variable X is given. Use the PDF to find the indicated probability.Find P(27 ? X ? 42).f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Choose the equivalent expression for the given expression.cos2x
A. 1 - sec2x B. 1 - sin2x C. 1 + sin2x D. sin2x - 1
Mathematics
Simplify.
A. 
b
B. 
C. 
D. 
Mathematics
Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.(-7x3y4)2
A. 49x5y6 B. -49x6y8 C. 49x6y8 D. -7x6y8
Mathematics