Will the sum of 56+ (-56) be Positive negative or zero

Ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms. ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0