Look at the picture. Will award brainliest for best answer (with explanation)!

A(t)=728(1+0.04)^t how much money did aditya originally invest

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a