Bryce's class jumped rope in P. E. He counted the number of jumps each student completed before getting tangled in the rope. The number of jumps 7 students completed was: 70, 71, 45, 55, 39, 31, 53

What was the mean absolute deviation of the numbers of jumps completed? Round the answer to the nearest whole jump.
A) 15
B) 23
C) 12
D) 18

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?