Provide an appropriate answer.Let A = 
and B = 
. Show that AB ? BA. Show all your work.
What will be an ideal response?
Answers may vary. One possible solution follows.
Left-hand side:
AB = 
= 
Right-hand side:
BA = 
= 
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Use the graph to solve the equation or inequality. If appropriate, write your answer in interval notation.y1 > 3
A. [-1, 2] B. (-?, -1) ? (2, ?) C. (-?, -1] ? [2, ?) D. (-1, 2)
Provide an appropriate response.Which of the following is the correct way to evaluate the expression 6 + 4 ? 4?
A. 6 + 4 ? 4 = 16 + 4 = 28 B. 6 + 4 ? 4 = 10 ? 4 = 40 C. 6 + 4 ? 4 = 6 + 16 = 22 D. 6 + 4 ? 4 = 24 + 16 = 40
Find the present value of the ordinary annuity. Round to the nearest cent.Payments of $630 are made semiannually for 16 years at 4% compounded semiannually.
A. $8553.96 B. $22,630.49 C. $14,785.05 D. $11,260.34
Perform the indicated operations. Write the answer in lowest terms.
? 
÷ 
A. 
B. 1
C. 
D. 