Convert the rectangular equation to a polar equation that expresses r in terms of ?.y = 9

A. r = 9
B. sin ? = 9
C. r = 
D. r = 

Answer: C

Mathematics

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Find the limit.

A. -? B. 8 C. ? D. Does not exist

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I = 60 mAPK, E = 30 VPK, and f = 1 KHz. Using i as the reference, find e 20 æsec after t0 when i leads e by 45ø.

a. e = 3.8 v b. e = 9.3 v c. e = -18.4 v d. e = -27.1 v e. e = -30.0 v

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Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = - x2 + 7x - 7

A. Increasing on ; decreasing on 
B. Increasing on ; decreasing on 
C. Increasing on ; decreasing on 
D. Increasing on ; decreasing on 

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Write interval notation.{x ? x ? 20.5}

A. (-?, 20.5] B. (-?, 20.5) C. [20.5, ?) D. (20.5, ?)

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