What is the domain of the relation {(-5,-,-,,,3)}

Ill mark the brainliest if you me with the these three questions 7,8,9

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

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?