Find: a. The center and radius of the circle. b. The x- and y-intercepts of the graph of the circle.x2 + y2 + 2 = 0
A. a. center = (0, 0); radius = 
b. (
, 0), (0, 
)
B. a. center = (0, 0); radius = 
b. (-
, 0), (
, 0), (0, 
), (0, -
)
C. a. ?
b. ?
D. a. center = (0, 0); radius = 2
b. (-
, 0), (
, 0), (0, 
), (0, -
)
Answer: C
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Estimate the value of the quantity.A hat is dropped from a hot air balloon. The hat falls faster and faster but its acceleration decreases over time due to air resistance. The acceleration is measured every second after the drop for 6 seconds. Find an upper estimate for the speed when 
A. 32.06 ft/sec B. 192 ft/sec C. 38.03 ft/sec D. 69.14 ft/sec
Perform the indicated operation and write the answer in lowest terms. 
+ 
- 
A. 
B. 
C. 
D. 
Simplify the radical expression by factoring out the largest perfect nth power. Assume that all variables are positive.
A. 6x
B. 6x
C. 216x
D. 6
Let 
.
?
__________
?
__________
?
__________
What will be an ideal response?