Помогите пожалуйста 1 и 2 заранее спасибо​

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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

Which number completes the inequality? 2/3 < _ < 7/9