15. The measure of the second angle in a triangle is four more than the measure of the first angle
and the measure of the third angle is eight more than twice the measure of the first angle. Find
the measure of each angle.

Students are getting signatures for a petition to increase sports activities at the community center. the number of signatures they get each day is 3 times as many as the day before. the expression 3^6 represents the number of signatures they got on the sixth day. how many signatures did they get on the first day?