It takes 45 seconds. the easiest way to do these is to use a graphic calculator and replace the variables with x and y, for example, this equation would become -5x^2+30x, and if you don't have access to a graphing calculator, you can always use desmos online.
Answer:
One of the solution is 2
Step-by-step explanation:
The answer is 41 but if you take it step by step you will get 140
One more and I skskskakakas you