Solve the polynomial equation by factoring.x4 - 81 = 0
A. 6, -6
B. 18, -18
C. 9, -9
D. 3, -3
Answer: D
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Solve the problem.Find the average value of the function y = 
over the interval from 
to 
A. 
?
B. 
?
C. 
?
D. 
?
Use the inverse trig functions to express the angle in terms of the indicated unknown side. 
Express angle A in terms of b. Use one of the inverse trig functions tan-1, sin-1, or cos-1.
A. A = cos-1 
B. A = tan-1 
C. A = sin-1 
D. A = sin-1 
Use the reciprocal identities to find the indicated function value.csc ? = 7, find sin ?
A. - 
B. - 
C. 
D. 
Solve the problem. Round your answer to two decimal places.The distance an object falls when dropped from a tower varies directly as the square of the time it falls. If the object falls 144 feet in 3 seconds, how far will it fall in 15 seconds?
A. 3600 ft B. 4050 ft C. 240 ft D. 3150 ft