Function Model Construction and Application Practice Test

A company's profit $$P$$ (in thousands of dollars) is modeled by $$P(x) = -2x^3 + 15x^2 - 24x + 10$$, where $$x$$ is the number of years since 2020. What is the company's profit in 2023?

A rational function models the concentration $$C$$ (in mg/L) of a medication in the bloodstream $$t$$ hours after injection: $$C(t) = \frac{120t}{t^2 + 4}$$. What is the concentration after 2 hours?