If you invest x dollars at 4% interest compounded annually, then the amount a(x) of the investment after one year is a(x) = 1.04x. find aoa, aoaoa, and aoaoaoa. what do these compositions represent? find a formula for the composition of n copies of a.

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each,and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent.how much did jame pay at the end?

Math it's appreciated. (picture provided)

Given right triangle a w/a hypotenuse length of x+4 and a leg of x, and right triangle b, w/ a hypotense length of 3y and a leg length of y+4 for what values of x and y are the triangles congruent by hl?