Solve the problem.Use the comparison line graph to determine how many more hours David needed to prepare for Test 4 than Jennifer.
A. 3
B. 0
C. 1
D. 2
Answer: D
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Find all the complex roots. Leave your answers in polar form with the argument in degrees.The complex fifth roots of 
+ i
A. 
(cos 30° + i sin 30°), 
(cos 102° + i sin 102°), 
(cos 174° + i sin 174°), 
(cos 246° + i sin 246°), 
B. 32(cos 30° + i sin 30°), 32(cos 102° + i sin 102°), 32(cos 174° + i sin 174°), 32(cos 246° + i sin 246°), 
C. 
(cos 6° + i sin 6°), 
(cos 78° + i sin 78°), 
(cos 150° + i sin 150°), 
(cos 222° + i sin 222°), 
D. 32(cos 6° + i sin 6°), 32(cos 78° + i sin 78°), 32(cos 150° + i sin 150°), 32(cos 222° + i sin 222°), 
Solve.A storehouse stores 640 different inventory items. 
of these items are perishable. How many of the inventory items are perishable?
A. 192 items B. 189 items C. 64 items D. 195 items
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Perform the indicated operation(s), whenever possible.Let A = [3 4] and B = 
. Find A + B.
A. 
B.
[-1 10]
C. 
D. not defined