Uma lanchonete oferece a seus clientes apenas dois tipos de sanduíches: hot dog e hambúrguer. Como sobremesa há três opções: sorvete, torta ou salada de frutas. Quantas são as possibilidades para uma pessoa fazer uma refeição incluindo um sanduíche e uma sobremesa?

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