Solve.A rock falls from a tower that is 192 ft high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth.
A. 3.5 sec
B. 12.3 sec
C. 13.9 sec
D. 2304 sec
Answer: A
Mathematics
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Determine whether the improper integral converges or diverges.
A. Converges B. Diverges
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Factor completely.25p2(r + 6)4 + 60pq(r + 6)4 + 36q2(r + 6)4
A. (r + 6)4(5p - 6q)2 B. (r + 6)4(5p + 6q)(5p - 6q) C. (r + 6)4(5p + q)2 D. (r + 6)4(5p + 6q)2
Mathematics
Multiply and simplify.
? 
A. 6
B. 
C. 
D. 
Mathematics
The currents in an electrical network are given by the solution of the system
?
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where I1, I2 and I3 are measured in amperes. Solve the system of equations using matrices.
?
A. I1= 5, I2 = 4, I3 = 8 B. I1 = 4, I2 = 4, I3 = 8? C. I1 = 3, I2 = 4, I3 = 8? D. I1 = 2, I2 = 4, I3 = 8? E. I1 = 1, I2 = 4, I3 = 8
Mathematics