The product of 16 and 4 less than a number is 208. find the number

Which statement about the graph of y = 8(0.25)^2

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?  

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab