Which expression is equivalent to -2(m-n+(2m-6n)

What is the smallest integer n such that n\sqrt{2} is greater than 20

The jones farm has 24 cows that each produce 52 quarts of milk a day. how many quarts are produced each day altogether

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.