HELPPP I NEED HELP HELP ME

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.