I need help ASAP no Rocky

How many solutions does the nonlinear system of equations graphed below have?

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?

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?