Find the center and the radius of the circle.x2 + y2 - 8x - 18y + 97 = 64
A. center (-4, -9), radius = 64
B. center (4, 9), radius = 8
C. center (-9, -4), radius = 64
D. center (9, 4), radius = 8
Answer: B
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The following table shows the cubic inches C of air remaining in a leaky balloon t seconds after the leaking started.
t 0 3 6 9 C 828 717 621 402?
A: Explain in practical terms the meaning of 
.
B: Use the average rate of change from 
to 
to estimate at 
. Round your answer to two decimal places. C: Use your answer from part B to estimate the amount of air remaining in the balloon after 5 seconds. Round your answer to two decimal places.
What will be an ideal response?
Solve the problem.A balloon used in surgical procedures is cylindrical in shape. As it expands outward, assume that the length remains a constant 90.0 mm. Find the rate of change of surface area with respect to radius when the radius is 0.070 mm. (Answer can be left in terms of ?).
A. 90.28? mm2/mm B. 90.14? mm2/mm C. 180.28? mm2/mm D. 180.0? mm2/mm
Find the volume of the specified solid. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the volume of a cylinder with radius 5 cm and height 7 cm.
A. 549.5 cm3 B. 376.8 cm3 C. 188.4 cm3 D. 266.9 cm3
Solve the problem.One pump can drain a pool in 6 minutes. When a second pump is also used, the pool only takes 4 minutes to drain. How long would it take the second pump to drain the pool if it were the only pump in use?
A. 22 min
B. 12 min
C. 
min
D. 2
min