How do u find the area of a triangle

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10