What do u add to 5/7/8 to make 8

For the equations below which statement is true ?

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811