Give the quadrant in which the point is located.(-15, 4)
A. Quadrant III
B. Quadrant IV
C. Quadrant I
D. Quadrant II
Answer: D
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Solve the problem.Murrel's formula for calculating the total amount of rest, in minutes, required after performing a particular type of work activity for 30 minutes is given by the formula R(w) = 
, where w is the work expended in kilocalories per min. A bicyclist expends 6 kcal/min as she cycles home from work. Find R'(w) for the cyclist; that is, find R'(6).
A. 2.96 min2/kcal B. 3.7 min2/kcal C. 4.44 min2/kcal D. 13.33 min2/kcal
Find all the complex roots. Write the answer in the indicated form.The complex square roots of 2 (cos 
+ i sin 
) (rectangular form)
A. 
+ 
i, - 
- 
i
B. 
+ 
i, - 
- 
i
C. 
- 
i, - 
+ 
i
D. 6 - 2i, -6 - 2i
Use Cramer's rule to solve the system.
A. {(6, -1, 2)} B. {(5, 1, 2)} C. {(1, 2, 1)} D. {(5, -1, -2)}
What is the domain of f(x)? What is its range?f(x) = 
+ 5
A. Domain: (-?, 7) ? (7, ?); range: (5, ?) B. Domain: (-?, -7) ? (-7, ?); range: (-?, 5) C. Domain: (-?, -5) ? (-5, ?); range: (-?, 0) ? (0, ?) D. Domain: (-?, 5) ? (5, ?); range: (0, ?)