What is the right equation

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

Find the missing factor. write your answer inexponential form.9^2=9^4×

Write a similarity statement for the similar triangles. afgh ~ a