Determine the domain of the expression. Write the domain in interval notation.
A. (-?, 6) ? (6, ?)
B. (-?, 0) ? (0, ?)
C. (-?, ?)
D. (-?, -6 ) ? (-6 , ?)
Answer: A
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Determine whether the argument is valid or invalid.Loretta's hobby is stamp collecting. If her husband likes to fish, then Loretta's hobby is not stamp collecting. If her husband does not like to fish, then Nathan likes to read. Therefore, Nathan likes to read.
A. Valid B. Invalid
Evaluate the expression.61
A. 
B. 6
C. 1
D. -6
Identify the degree of the polynomial and list its coefficients.9x - 8
A. degree: 1 coefficients: 9, 8 B. degree: 0 coefficients: 9, -8 C. degree: 9 coefficients: 9, 8 D. degree: 1 coefficients: 9, -8
Solve the problem.A certain noise produces 
of power. What is the decibel level of this noise (to nearest decibel)? Use the formula 
where 
A. 184 decibels B. 70 decibels C. 8 decibels D. 80 decibels