The critical points of a rational inequality are x = –4 and x = 2. Which set of points can be tested to find a complete solution to the inequality? x = –4 and x = 2
x = –5 and x = 3
x = –5, x = 0, and x = 3
x = –4, x = 0, and x = 2

An object is accelerating at a constant rate. its velocity in feet per second as a function of time in seconds can be modeled by the linear function v(t) = 2.5t. what does the dependent variable represent for this function? a) acceleration b) distance c) slope d) velocity