If the reserve rate is 7% and a bank receives a deposit of $9000, how much of the $9000 is the bank free to lend?

What properties allow transformation to be used as a problem solving tool

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Abcd is a square. what is the measure of angle bac