8. Store A sells a 500 GB hard disk for $85.05 with a 20% discount while Store B sells the same hard disk
for $76.05 with a 10% discount. Write down an
expression that you can calculate mentally to help
you decide which store to buy the hard disk from.​

Ineed with number 6 , explain how to get 1978

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?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take