Follow the order of operations to work the problem.-20 + 6 - 7
A. -19
B. 21
C. -21
D. -7
Answer: C
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Consider below the branching tree diagram based on the number per 3000 American adults. 
LetT = the set of Americans who like classical music R = the set of Republicans who like classical music D = the set of Democrats who like classical music I = the set of Independents who like classical musicDetermine whether the statement is true or false.Let M = the set of Independent men who like classical music W = the set of Independent women who like classical musicThe set of elements in M and W combined is equal to set I.
A. True B. False
Graph the polar equation.r = 2 sin ?
A. 
B. 
C. 
D. 
Convert the angle to DMS notation. Round your answer to the nearest second.40.865°
A. 40°51'87'' B. 40°51'54'' C. 40°51'60'' D. 40°51'42''
Convert the units using two or three unit fractions.7 hr = 
sec
A. 6300 B. 420 C. 12,600 D. 25,200