What does point a represent on the graph

Given the following similar triangles what is the area of triangle b ? a) 1 b)1.8 c)3.2 d)5

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Which value would be a solution for x in the inequality 47-4x< 7