I will MARK CROWN just need help

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

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