Find all specified roots.Cube roots of 8i
A. -2i, 
+ i, - 
+ i
B. 2i, 
- i, - 
- i
C. -2i, - 
- i, 
- i
D. 2i, 
+ i, - 
+ i
Answer: A
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Solve the problem.A zoom lens in a camera makes a rectangular image on the film that is 6 cm × 5 cm. As the lens zooms in and out, the size of the image changes. Find the rate at which the area of the image begins to change (dA/df) if the length of the frame changes at 0.6 cm/s and the width of the frame changes at 0.2 cm/s.
A. 
m2/s
B. 4.2 m2/s
C. 0.84 m2/s
D. 4.6 m2/s
Let p, q, r, and s represent the following statements: p: One plays hard. q: One is a guitar player. r: The commute to work is not long. s: It is not true that the car is working.Express the following statement symbolically.The commute to work is long.
A. ~s B. ~r C. r D. s
Find the area.
A. 18 ft2 B. 15 ft2 C. 36 ft2 D. 16 ft2
Solve the problem.The annual rainfall in Maine is a random variable with probability density function defined by 
for x in 
Find the probability that the rainfall is greater than the mean.
A. 0.553 B. 0.512 C. 0.500 D. 0.549