Which situation does NOT show causation? A
When there are less workers on a construction site, the construction is completed in more time.

B
When the student population at a school increases, the amount of food the cafeteria prepares at lunch increases.

C
When the amount of sugar in a gallon of fruit juice increases, the number of calories per serving increases.

D
When there are more carbs in an athlete’s diet, the athlete’s speed increases.

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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?