Please help kind of struggling with this :P

For the function, f(x) = -5x 2, find f(-4).

Sketch one cycle if the cosine function y=2cos2theta

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext