How do you do this? I don’t get the exponent part

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

The graph represents f(x)=[x]+3. what is f(-2.2)?