### Linear Equation and System of Inequalities

A target heart rate T that is half a person's maximum heart rate is given by T=110 - 1/2A where A is a person's age. (a) What is T for a person 30 years old? 50 years old? (b) Sketch a graph of the system of inequalities. T > 110 - 1/2A T < 220 - A Assume that A is between 20 and 60. (c) Interpret your grap