Population growth: Here is one model of the per capita growth rate R, measured per year, as a function of population size N: For values of N between 0 and 100, R takes the constant value 0.01. For...

Population growth: Here is one model of the per capita growth rate R, measured per year, as a function of population size N: For values of N between 0 and 100, R takes the constant value 0.01. For values of N greater than 100 and less than 200, R is given by the expression

a. Make a graph of R as a function of N. Use a horizontal span of 0 to 200.

b. What is the per capita growth rate at a population level of 150?