Write in exponential notation.8 ? 8 ? 8 ? 8
A. 32
B. 82
C. 84
D. 48
Answer: C
Mathematics
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State the domain of the rational function.f(x) = 
A. (-?, 1) ? (1, ?) B. (-?, 9) ? (9, ?) C. (-?, -9) ? (-9, ?) D. (-?, -9) ? (-9, 0) ? (0, ?)
Mathematics
Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes B. Yes; no C. No
Mathematics
Write the expression in the standard form a + bi.
A. 
+ 
i
B. 
+ 
i
C. 
- 
i
D. 
- 
i
Mathematics
The profit P (in hundreds of dollars) that a company makes depends on the amount x (in hundreds of dollars) the company spends on advertising according to the model
?
?
What expenditure for advertising will yield a maximum profit?
?
A. 30 B. 0.5 C. 230 D. 15 E. 115
Mathematics