What is a good estimate for 1,710 2,740 4.322 5,700 7,810 6,395

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Sorry guys but as you have a small brain

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