Clara was given the following situation and told to write a piecewise function to describe it. while exercising, a person loses weight in the following manner: 0.5 pound per hour for the first hour 0.7 pound per hour for the next three hours 0.1 pound per hour until the workout is finished clara produced the following result. what did she do wrong and what is the correct answer? w(t)={0.5t if 0≤t≤1 0.7t if 1≤t<4 0.1t if t≥4