Perform the indicated calculation.Calculate a21 + a22a12 for the matrix A = 
.
A. -20
B. 44
C. 285
D. -12
Answer: B
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Determine the truth value for the simple statement. Then use these truth values to determine the truth value of the compound statement. Use the chart or graph when provided.9 + 8 = 20 - 3 or 36 ÷ 3 = 2 + 6
A. True B. False
Provide an appropriate response.A surveyor starts at point A on a triangular piece of land and determines angle A and the two sides AB and AC as shown. The two small ponds inhibit the direct measurement of length BC. Help the surveyor by determining the length of BC. 
A. 584.0 ft B. 301.7 ft C. 604.2 ft D. 149.6 ft
Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = y1/3, x = 0, y = 8
A. 16?
B. 32?
C. 
?
D. 12?
Solve the problem.It costs $29 per hour plus a flat fee of $17 for a plumber to make a house call. What is an equation of the form 
for this situation?
A. y = 29x B. y = 17x C. y = 17x + 29 D. y = 29x + 17