Find the surface area or volume.Use an integral table and a calculator to find to two decimal places the area of the surface generated by revolving the curve 
about the x-axis.
A. 69.52
B. 97.76
C. 85.31
D. 119.48
Answer: C
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Compute the gradient of the function at the given point.
A. -40i + 45j B. -40i + 9j C. 200i + 45j D. 100i + 45j
Use the shell method to find the volume of the solid generated by revolving the shaded region about the indicated axis.About the x-axisy = 4x = 4
A. 
?
B. 
?
C. 64?
D. 
?
Solve the problem.Each bank teller at Bank4U is first given a 7% cost-of-living raise and then a $1650 merit raise. Write a function that transforms each old salary x into a new salary N(x). Does it make any difference in which order these raises are given? Explain.
A. N(x) = 1.07x + 1650; Yes, because 7% of the current salary, x, is less than 7% of the sum of $1650 and the current salary, (1650 + x). B. N(x) = 1.07(1650 + x); No, they would be the same amounts either way. C. N(x) = 0.07(1650 + x); Yes, because 7% of the current salary, x, is less than 7% of the sum of $1650 and the current salary, (1650 + x). D. N(x) = 0.07x + 1650; Yes, because 7% of the current salary, x, is less than 7% of the sum of $1650 and the current salary, (1650 + x).
Use the distributive property to simplify.4(y + 7) - 3
A. 4y + 25 B. 4y + 31 C. 4y + 28 - 3 D. 4y + 4