I need help find x and y please

Micah solves a linear equation and concludes that x = 0 is the solution. his work is shown below. (1 – 3x) = 4(– + 2) 0 = x which statement is true about micah’s solution?

What is the number 321,000,000 in scientific notation? also what is the number? ?

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