Solve the problem.A certain noise measures 63 decibels. If the sound pressure is multiplied by 10, how many decibels will the new noise measure? L = 20 log 
, where p0 = 2 × 10-5 Pa.
A. 64 decibels
B. 630 decibels
C. 63 decibels
D. 73 decibels
Answer: D
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Simplify the radical expression. Assume all variables represent nonnegative real numbers.
A. 3xy
B. 3xy
C. xy
D. 3xy
Provide an appropriate response.Suppose that for a certain absorbing Markov chain the fundamental matrix is found to be $1 $2 $3
What is the expected number of times a person will have $3, given that he started with $2?
A. 1.5 B. 2.0 C. 0.5 D. 1.0
Joe and Bryan have been comparing their investment portfolios for several years. Joe claims that his portfolio of only stocks has a better record than Bryan's portfolio that is 20% stocks and 80% bonds. Let x be a random variable representing the annual percent return for Joe's portfolio and let y be a random variable representing the annual return on Bryan's portfolio. Use this information to calculate the coefficient of variation for Bryan's portfolio. Round your answer to two decimal places.
a. 75.8%
b. 131.92%
c. 65.31%
d. 125.15%
e. 153.11%
Use transformations of the graph of y = x4 or y = x5 to graph the function.f(x) = x5 + 3 
A. 
B. 
C. 
D. 