En Julià vol construir un terrari en forma d'ortoedre utilitzant peces rectangulars de metacrilat. Vol que el terrari tingui unes dimensions de 70 cm de llarg, 45 cm d'ample i 60 cm d'alt. Per a la base i els laterals utilitzarà metacrilat de 6 mm de gruix i per a la tapa un altre de 4 mm de gruix. Quant li costarà el material necessari, tenint en compte aquests preus d'una botiga del seu barri? Precio del metacrilato Espesor 6 mm: 75 €/m2 Espesor 4 mm: 52,50 €/m2

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