Write the expression in the standard form a + bi.
2
A. - 
B. i
C. 
D. -i
Answer: B
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Find the derivative.s = t7 tan t - 
A. 
= 7t6 sec2 t - 
B. 
= t7 sec2 t + 7t6 tan t - 
C. 
= t7 sec t tan t + 7t6 tan t - 
D. 
= - t7 sec2 t + 7t6 tan t + 
Find the largest open interval where the function is changing as requested.Increasing f(x) = 
A. (0, ?) B. (-?, 0) C. (1, ?) D. (-?, 1)
Find the volume of the solid generated by revolving the region about the y-axis.The region in the first quadrant bounded on the left by y = x3, on the right by the line 
, and below by the x-axis
A. 4?
B. 
?
C. 
?
D. 
?
Use the table to solve the problem. Round to the nearest cent.
A bank has $550,000 to lend for 9 months. It can lend it to a local contractor at a simple interest rate of 12%, or it can lend it to a small business that will pay 12% compounded monthly. If the bank wants to maximize its interest earned, who should receive the loan and what is the additional interest earned?
A. Contractor; $2,029.50 B. Business; $2,029.50 C. Business; $925,694.00 D. Contractor; $14,470.50