Exercise #4: Which of the following represents the solution set to the equation

For what values of b will f(x)= logbx be a decreasing function? (16 )

5/6+7/8what is the answer sealsdbdbshd

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?