Perform the indicated operations. Write the answer in the form a + bj.(-3 + 7j) - 4
A. -7 + 7j
B. 1 - 7j
C. 7 - 7j
D. 1 + 7j
Answer: A
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Graph the inequality.x ? -4
A. 
B. 
C. 
D. 
Write out the terms of the series.
A. 65 B. 3 + 8 + 13 + 18 + 23 + 28 + ... C. 1 + 3 + 8 + 13 + 18 + 23 D. 3 + 8 + 13 + 18 + 23 + 28
Solve the problem.The intensity of a radio signal from the radio station varies inversely as the square of the distance from the station. Suppose the the intensity is 8000 units at a distance of 2 miles. What will the intensity be at a distance of 12 miles? Round your answer to the nearest unit.
A. 248 units B. 222 units C. 205 units D. 186 units
Let 
?
Use a Riemann sum with four subintervals of equal length 
to approximate the area of R (under the graph of f on the interval [0, 2]). Choose the representative points to be the left end points of the subintervals.
?
__________ sq units
?
Repeat previous part with eight subintervals of equal length 
.
?
__________ sq units
?
Compare the approximations obtained in previous parts with the exact area (12 sq units). Do the approximations improve with larger n?
What will be an ideal response?