a washer and a dryer cost $649 combined . The washer costs $51 less than the dryer . What is the cost of the dryer

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?

Joanie watched 1 out of three of a movie in the morning

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1