Violet is trying to start an Intramural Club at her school. The principal tells her she must get signatures from students to sho
w support. Each filled sheet contains 25 signatures. By Monday, she and her friend already have 6 sheets filled with signatures. The principal tells Violet she must have 7 more sheets filled with signatures. Write an equation for the number of signatures Violet will get. If she fills all of these, how many signatures will she get in all?
, you end up with the differentials 
. Multiplying both sides by 2 gives 
.