Find the inverse of the matrix A, if it exists.A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
D. A-1 does not exist.
Answer: D
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Find the volume of the solid generated by revolving the region about the given line.The region in the first quadrant bounded by the line y = 3x3, by x-axis, and by the line x = 1, about the line y = - 1.
A. 
?
B. 
?
C. 
?
D. 
?
Factor:
Provide an appropriate response.Look for a pattern in the sequence of figures shown below. How many squares are needed for the 4th figure? The nth figure?
A. 13, 4n - 3 B. 14, 4n + 3 C. 13, 3n + 1 D. 12, 4n - 2
Find gross earnings. Overtime is one-and-a-half times the normal per piece rate.Mark Miller is paid $2.18 for each fishing reel assembled and is charged $1.12 per rejection. One week he assembled 208 reels at the regular rate, 24 reels at the overtime rate, and had 6 chargebacks.
A. $538.64 B. $499.04 C. $525.20 D. $531.92