Solve the problem.A searchlight is shaped like a paraboloid of revolution. If the light source is located 3 feet from the base along the axis of symmetry and the opening is 10 feet across, how deep should the searchlight be?
A. 6.3 ft
B. 8.3 ft
C. 0.5 ft
D. 2.1 ft
Answer: D
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Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = 2tan 
, x = 0, y = - 
A. 28? - 7?2
B. 28 - 7?
C. 7? + 7?2
D. 14? - 
?2
Find the mean of the given values.8.4 m, 8.9 m, 6.5 m, 8.9 m, 6.3 m
A. 8.4 m B. 6.5 m C. 7.8 m D. 8.9 m
Solve the problem.The regular price of a blanket is $22.95. During a November sale, the blanket was selling for 10% off the regular price. What was the sale price of the blanket? Round to the nearest cent.
A. $20.91 B. $2.55 C. $20.66 D. $2.30
Use the formula for the general term (the nth term) of a geometric sequence to find the indicated term of the sequence with the given first term, a1, and common ratio, r.Find a9 when a1 = -2, r = 2.
A. -512 B. 14 C. -1024 D. -508