Simplify. Assume x can represent any real number.
A. 10 
B. 10x2
C. 100x
D. -10x
Answer: A
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Find the total area of the shaded figure.
The diameters of the smaller circles are equal to 8. Use 
= 3.1416.
A. 150.8 B. 100.5 C. 301.6 D. 175.9 E. none of these
Find an approximation of the area of the region R under the graph of the function f on the interval [a, b]. Use n subintervals and choose the representative points as indicated. Please round your answer to two decimal places.
?
; 
; 
; midpoints
?
__________sq units
Fill in the blank(s) with the appropriate word(s).
Find two square roots for the complex number. Leave your answers in trigonometric form.
?
?
?
Choose the correctly sketched graph of the two roots.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Assume that the rate of change in y is proportional to ?y. Solve the resulting differential equation 
and find the particular solution that passes through the points 
,
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?
A. ?
B. ?
?
C. ?
D. ?
E. ?