Evaluate the function f(x) = - x^2 - 3 at the given value of the variable.
a. f(2)
b. f(-4)

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?

Ineed with math stuff it involves graphs

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25