Perform the indicated operation. Let C =[1
-3 and D= [-1
2] 3
-2

Find C - 4D.

Find the value of x. round the length to the nearest tenth

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?