Solve the equation by making an appropriate substitution.2x - 6
- 80 = 0
A. 
B. 
C. {8}
D. {64}
Answer: D
Mathematics
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Solve the problem.Suppose the sales of a particular brand of appliance satisfy the relationship 
, where S(x) represents the number of sales in year x, with 
corresponding to 2010. In what year would the sales be 4320?
A. 2019 B. 2021 C. 2018 D. 2020
Mathematics
State the domain of the rational function.f(x) = 
A. (-?, ?) B. (-5, ?) C. (-?, 5) ? (5, ?) D. (-?, -5) ? (-5, ?)
Mathematics
Write the quotient in the standard form.
A. 
+ 
i
B. 
+ 
i
C. 
- 
i
D. 
- 
i
Mathematics
Add or subtract. Express the answer as a mixed number.15
- 9
A. 24
B. 23
C. 5
D. 5
Mathematics