The total weight of the cargo entering a seaport each year can be modeled by the function C(t) 0.2t 3 1000t 2 10t 50,000, where t is the number of years since the port was opened. The average weight of cargo delivered by each ship is modeled by the function A(t) 0.1t 500. Write an expression describing the number of ships entering the port each year.

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation