Ineed with this problem its 620÷20 and 600÷100

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Jose bought 20 shares of netflix at the close price of $117.98. in a few years, jose sells all of his shares at $128.34. how much money did jose make? a.) $192.50 b.) $207.20 c.) $212.50 d.) $224.60

To decrease an amount by 16% what single multiplier would you use