Can you guess the first number combination on this lock? It goes through 0-9

Simplify (2^5/3^2)^4 a. 2^20/3^8 b. 2^9/3^8 c. 8^5/12^2 d. 2/3^2

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units