Out of z people in the audience, half were parents. how many parents were there in the audience? (express your answer in terms of z.)

The parking lot of a store has the shape shown. all angles are right angles. what is the area of the parking lot?

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.

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?