Find the mean and standard deviation of the specified probability density function.f(x) = 
for [6, 13]
A. ? = 3.45, ? = 2.02
B. ? = 9.50, ? = 2.02
C. ? = 9.50, ? = 1.73
D. ? = 3.50, ? = 2.02
Answer: B
Mathematics
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A. 1.00 B. -0.20 C. 1.11 D. -0.31
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Find and simplify the difference quotient of f, 
, for the function.f(x) = 2x + 7
A. 2 + 
B. 2 + 
C. 0
D. 2
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Write the expression in expanded form.logax2yz6
A. 2 logax ? logay ? 6logaz B. loga2x + logay + loga6z C. (logax)2 + logay + (logaz)6 D. 2 logax + logay + 6logaz
Mathematics
Solve.m - 1 ? -5
A. m ? 4 B. m ? -4 C. m ? -6 D. m ? 6
Mathematics