Need the steps to get the answer 0.264 that is on my answer key textbook

Find the length of the diagonal of the rectangle. round your answer to the nearest tenth. || | | 8 m | | | | 11 m

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?

When is g(x) = 0 for the function g(x) = 5.23x + 4?