Determine the domain and the range of the function.f(x) = -x2 + 4x + 5
A. domain: {x|x ? -2}
range: {y|y ? 9}
B. domain: all real numbers
range: all real numbers
C. domain: all real numbers
range: {y|y ? 9}
D. domain: all real numbers
range: {y|y ? -9}
Answer: C
Mathematics
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Factor the expression.
?
?
A. 
B. 
C. 
D. 
E. not factorable
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Write as the sum and/or difference of logarithms. Express powers as factors.ln 
A. 
B. 
ln y + 
C. 8 ln y + 8
D. 
ln 
+ 
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Solve the equation.log (5 + x) - log (x - 3) = log 5
A. 
B. 5
C. ?
D. - 5
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