Which system of equations can used to determine

The $x$-intercepts of the parabola $y = x^2 + bx + c$ are $(-3,0)$ and $(5,0).$ find the equation of the parabola, and submit your answer in $y = ax^2 + bx + c$ form.

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?