The lines represented by the equations y+\frac{1}{5}x=4y+ 5 1 x=4 and 20y+4x=8020y+4x=80 are neither parallel nor perpendicular parallel perpendicular the same line

There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday