Which one of the following figures is not a polygon

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

On this question. a hypothermia occurs when a person's body temperature drops below 95 degrees fahrenheit. write and solve an inequality that describes how much lower the body temperature of a person with hypothermia will be than the body temperature of a person with a normal temperature of 98.6 degrees fahrenheit