7. Given x = -x^2-3x+10

Is this a polynomial function? i need to know asap

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

What is the solution for the following system of equations? use any method to solve. 2x + 8y = 4 x = -3y + 5 question 4 options: x = 14, y= -3 x = 2, y = -3 x = -3, y = -3 x = 12, y = 5