If the path of the t-shirt is represented by a parabola, which function could be used to represent the height of the t-shirt as a function of time, t, in seconds?

Can any one me with the answers to these questions asap?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earned $75 in interest.how much interest will she earn during the following year?