(Hurry) Pls help me‍♀️ It’s about Circles Theorem (Isosceles and Angle in Semicircle) Find the missing angles labelled in each of these circles

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Which inequalities can be used to find the solution set of the following inequality? check all that apply. |2x – 5| (2x – 5) (2x + 5) –(2x – 5) –(2x + 5)

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)