Help, please the question and thank you

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

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 of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?