What is the answer to this math problem -5+-3+2

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

What is the binomial expansion of (2x-3)^5