Simplify.
I need this answered ASAP pleaseee.

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?

When turned about its axis of rotation, which shape could have created this three-dimensional object?

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4