Discover Questions

What do people do when they are fine and everythings good? How do i know what to do now that ive reached my goals? Could someone help me with these math problems? I can't figure them out. Solve the linear equation;
x+2y=15
y=-2x+0 9x-12y=-3
-12x+16y=4? 0.8 litres water is how many cups? Current in a circuit increases linearly from 0 to 5A over 5 second total charge flowing through cicuit over duration is seniors plz give ans? Find Marginal Cost from total cost function (P^2)A(P)?