Find the length of side b to the nearest whole number

Ineed solving this problem h/8=-25 solve for h idk how to this can someone show me and also give an answer you

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.

If f(x)=-3x+2 and g(x)=-7x-2, which point represents f(x)=g(x)?