Put these in order of size smallest first 0.8 30% 3/5

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?