Linear and Quadratic Rates of Change Practice Test

A lab culture’s population (in thousands) follows $$P(t)=20+2t+t^2$$ for $0\le t\le 5$, where t is days. Based on the scenario, how does the rate of change in population compare at the beginning and end of the time period?

A city’s population is modeled linearly by $$P(t)=120000+2500t$$, where t is years since 2025, used for housing projections. Based on the scenario, how does the rate of change in population compare at the beginning and end of the time period?​