Which is easier to use - the outer semi-circle or the inner semi-circle?

What is the value of the expression below? (81^2)^1/8

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

One positive number is 9 more than twice another. if their product is 95, find the numbers