Help pls i can give brainliest?
Identify the solution to the system of equations.

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2