Hey bros i need ur help dont worry this is not a test just a practice I found online.

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

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

A. 120 degrees b. 90 degrees c. 30 degrees d. 60 degrees