An aircraft factory manufactures airplane engines. the unit cost (c the cost of dollars to make each airplane engine) depends on the number of engines are made, then the unit cost is given by the function c(x) = 0.3x -210x+46,651. what's the minimum cost?

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.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.