Afood packet is dropped from a helicopter and is modeled by the function f(x) = -12x2 + 19200. the graph below shows the height f(x), in feet, of the food packet at different times x, in seconds:
use the graph to determine the reasonable domain of f(x) based on the context.
all real numbers
x ≤ 19200
-40 ≤ x ≤ 40
0 ≤ x ≤ 40

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."

Which number line represents the solution set for the inequality - x 24?

Which strategy is used by public health to reduce the incidence of food poisoning?