The perimeter of an equilateral triangle is 6n - 15. write an expression to represent the length of each side.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent

How can constraints be used to model a real-world situation?