What are the mean and mode of the following data set?

59

16

57

46

58

21

36

41

23

64

20

66

40

51

28

46

a.

mean: 43.5, mode: 46

b.

mean: 42, mode: 46

c.

mean: 43.5, mode: 42

d.

mean: 46, mode: 42

The altitude of a plane as it begins to descend is shown by the linear equation a = 30,000 - 1500m, where a is the plane's altitude, in feet, and m is minutes. What is the plane's altitude when m = 12?

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