Reduce the index of radical.
?
?
A. 
?
B.
?
C.
?
D. (x + 1)
?
E.
Answer: C
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Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation 
where x is the time in months, with x = 1 corresponding to January, 
and 
Determine the month with the greatest total sales and give the sales in that month.
A. September; $3200 B. December; $8600 C. June; $5900 D. March; $8600
Solve the problem.If a plane can travel 350 miles per hour with the wind and only 250 miles per hour against the wind, find the speed of the wind and the speed of the plane in still air.
A. Plane: 300 mph, wind: 60 mph B. Plane: 50 mph, wind: 300 mph C. Plane: 400 mph, wind: 50 mph D. Plane: 300 mph, wind: 50 mph
Add or subtract. Simplify your answer to lowest terms.
- 
A. 
B. 2x + 4
C. 
D. 
Identify the domain of f. Write your answer in set-builder notation.f(x) = 
A. {x|x ? 1} B. All real numbers C. {x|x ? -1} D. {x|x ? 0, x ? -1}