A

A triangle is inscribed in a circle. Its vertices divide the circle into three arcs whose lengths are in the ratio $3:4:5$. Determine the measures of the interior angles of the triangle.

Given the function $g$ (see the picture), find $\underset{x\to \mathrm{\infty }}{lim}g(x)$. $$g(x)=\{\begin{array}{ll}\frac{1}{2}(x-1{)}^2+1& \text{if }x<1,\\ \frac{1}{x^2}+2& \text{if }x\ge 1\end{array}$$

Given the graph of the function $f$, find $\underset{x\to 2}{lim}f(x)$.

Evaluate the following limit. $$\underset{x\to -\mathrm{\infty }}{lim}\frac{6x^2-x+2}{3x^2+x-3}$$