Which equality represents a proportional relationship?

A) -2.8/-2 = 4.2/3
B) 2.6/1.3 = 4.2/2
C) 2/5 = 8/9
D) 3/4 = 7/12

Factor the polynomial by its greatest common monomial factor.

Given the diagram below, michael writes, "segment ac is congruent to segment ac." which of the following reasons allow him to write this statement?

5cakes cost 3.50 how much do 7 cakes cost