a tea stall owner uses 15litre of milk and 81760 ml of water to make tea everyday. what amount of tea does she make everyday​

Factor this polynomial completely x^2-64

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Bring the fraction a/a-4 to a denominator of 16-a^2