4/6(x+12)=10 how do you do this one? ? i am confused

Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years

Which best explains why this triangle is or is not a right triangle ?