PLEASE HELP PLEASE

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.

Solve the formula ax+ by = c for x.