3. Unidades de tiempo a. Expresar 8280 segundos en horas b. Convertir 150 ms a horas c. Expresar 12413 segundos en horas y minuto d. Exprese 3 h 36 min 42 s en segundos

Find the least common multiple of 12 c and \( 9 \mathrm{~m}^{2} \)

142. Fwattip hundwn tnuluminu. \( \begin{array}{ll}\text { (4) } 5 \cdot 127-5 \cdot 125, & \text { (F) } 12 \cdot 37-12 \cdot 25-12^{2} \\ \text { q) } 126 x-5^{3} x_{1} & \text { n) } 10 \cdot 37-5 \cdot 72\end{array} \)

Find all solutions of the equation in the interval \( [0,2 \pi) \) \[ \cot ^{2} x+2 \csc x=-1 \] Write your answer in radians in terms of \( \pi \). If there is more than one solution, separate them with commas.

What would the effect of contractionary monetary policy be on the aggregate level of income and spending? A An increase in the aggregate level of income and spending. B A decrease in the aggregate level of income and spending. C An increase in the aggregate level of income and a decrease in the aggregate level of spending. D A decrease in the aggregate level of income and an increase in the aggregate level of spending.

Suppose that a country has a mixture of individuals and companies that are in each of the following situations: Group I. These have borrowed in domestic currency to finance assets whose values are also in domestic curren Group II. These have borrowed in foreign currency to finance assets valued in domestic currency. Group III. These have borrowed in domestic currency to finance assets valued in foreign currency. Group IV. These have borrowed in foreign currency to finance assets valued in (the same) foreign currency. Which of these groups see the domestic-currency value of their wealth fall when the country devalues? (Assume achese that the initial value of the assets is at least as great as what was borrowed).