Estimate a 15% tip on a dinner bill of $39.86 by first rounding the bill amount to the nearest ten dollars

Consider the table below. x y -1 -5 0 5 1 11 2 13 3 11 complete the standard form equation representing the quadratic relationship displayed above, where a, b, and c are constants.

True or false? a circle could be circumscribed about the quadrilateral below.

Which of the following represents the factorization of the trinomial below? x^2+7x-30