Please help!! what should i use to get the area of the triangle?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6