How many quarts of pure antifreeze must be added to 6 quarts of a 30% antifreeze solution to obtain a 50% antifreeze solution

1,589.63 in.^3

step-by-step explanation:

i hope this you : d

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)