Please help

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?