9. The table below shows the change in a stock price over a period of a week. If 12 shares of
stock were purchased on Monday and sold on Tuesday, then what was the loss in earnings?
DAY
STOCK PRICE
Monday
$16.87
Tuesday
$16.35
$15.34
Wednesday
Thursday
$15.43
Friday
$15.86

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- 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. 3- 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 part b?