The ratio of girls to boys in your class is 5 to 7. Two girls joined your class. Now the ratio of girls to boys is 6 to 7. How many students are now in your class.

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?

If g^-1(x) is the inverse of g (x) which statement must be true

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b