Which value in the replacement set is a solution to this equation?

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Line wx is parallel to line yz. if m

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola