Solve the problem.The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by 
where x is the number of videos rented daily. Find the lowest cost to the nearest dollar.
A. $660
B. $610
C. $510
D. $760
Answer: A
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Divide.
A. -10 B. 15 C. -15 D. 10
Find all cube roots of the complex number. Leave answers in trigonometric form.64 cis 120°
A. 4
, 4
, 4
B. 4(.7660 + .6428i), 4(-.9397 + .3420i), 4(.1736 - .9848i)
C. 4
, 4
, 4
D. 4(.6428 + .7660i), 4(-.3420 + .9397i), 4(.9848 - .1736i)
Draw the angle in standard position and state the quadrant in which the terminal side of the angle lies or the axis on which the terminal side of the angle lies.330°
A. Quadrant III
B. Quadrant III
C. Quadrant I
D. Quadrant IV
Solve the problem.A certain noise has an intensity I of 
. Given that decibel level D is related to intensity by 
, where I0 is 10-12, determine the decibel level of the noise. Round your answer to the nearest decibel.
A. 184 decibels B. 8 decibels C. 70 decibels D. 80 decibels