True or false there are some parallelograms that are not rectangles

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.

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

What is the area of the trapezoid shown ?