Evaluate the determinant.
A. 1 - 8x
B. 8x
C. 0
D. 8x - 1
Answer: B
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Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the x-axis.y = 8x3, y = 8x, for x ? 0
A. 
?
B. 
?
C. 
?
D. 
?
Solve the problem by integration.Find the root-mean-square of the voltage V = 430 sin 120?t (in V) for one period.
A. 215 V B. 120 V C. 304 V D. 430 V
Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product.
?
A.
AB = 
The average cost per credit hour is $63.
B.
AB =
Tuition for Student 1 is $852, tuition for Student 2 is $1053, and tuition for Student 3 is $939.
C.
AB =
Tuition for Student 1 is $1023, tuition for Student 2 is $768, and tuition for Student 3 is $1053.
D.
AB = 
Tuition for Student 1 is $1137, tuition for Student 2 is $939, and tuition for Student 3 is $768.
Check the addition. If the answer is incorrect, find the correct answer.
1669
A. Incorrect; should be 1656 B. Incorrect; should be 1756 C. Correct D. Incorrect; should be 1679