Name the quadrant in which the angle ? lies.sin ? > 0, cos ? < 0
A. I
B. II
C. III
D. IV
Answer: B
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Solve the problem.A person at the top of a 600 foot tall building drops a yellow ball. The height of the yellow ball is given by the equation src="https://sciemce.com/media/4/ppg__10707191909__f1q62g4.jpg" alt="" style="vertical-align: -4.0px;" /> where h is measured in feet and t is the number of seconds since the yellow ball was dropped. Find the time that the balls are the same distance above the ground and find this distance.
A. 5 sec; 200 ft
B. 4.5 sec; 276 ft
C. 4 sec; 344 ft
D. 5.5 sec; 116 ft
where h is measured in feet and t is the number of seconds since the yellow ball was dropped. A second person, in the same building but on a lower floor that is 
from the ground, drops a white ball 
after the yellow ball was dropped. The height of the white ball is given by the equation
Write a differential formula that estimates the given change in volume or surface area.The change in the surface area S = 4?r2 of a sphere when the radius changes from r0 to r0 + dx
A. dS = 2?r0 dr B. dS = 8?r0 dr C. dS = 4?r0 dr D. dS = 4?r02 dr
Simplify the expression.644/3
A. 16,384 B. 4096 C. 1024 D. 256
Express as a product.log10
A. 
log105
B. log305
C. 
log1053
D. 10 log35