Can y’all Plz help me ??(Show ya work) It Says What Value of X makes this equation true

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?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be