How many solutions does the following system of equations have

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.

If f(x) = x squared and g(x) = x - 4 what value is equivalent to (f•g)(10)

Find the absolute maximum and minimum values of f(x. y)=x^2+y^2-2x-2y on the closed region bounded by the triangle with vertices (0,0), (2,0), and (0,2)