Can anyone answer these two questions? please :)

What is the measure of angle afe? 79 81 91 99

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?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)