Please Help me. I need to find the hieght if this cone.

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

What is the frequency of the sinusoidal graph?

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?