8. on a trip, a student drove 40 miles per hour for 2 hours and then drove 30 miles per hour for 3
hours. what is the student's average rate of speed, in miles per hour, for the whole trip?
1) 34
2) 35
3) 36
4) 37

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?