What is the equation for the line of reflection?

(Sorry for the poor camera quality)

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

Which expression is equivalent to -5(3x - 6/7)

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table