What is graph and the solution??? Pt.4

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?