I have no idea how to do this.. help?

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply