What does f stand for in maths?

What environmental problems could interstate compacts address and what solutions could they achieve? What is IB math studies standard level? What does closer than mean in math? What are similarities of isosceles and equilateral triangles? What fraction is equivalent to 12 30 90? How many seconds are in sixty minutes? How do you read a two sided stem and leaf plot? How may times can 3 go into 55? Can you get held back more then twice? What has 2 faces 1 edge and no vertex? What is the definition of RAM in the paragraph? What is radical balance? How may dkm in a meter? Why is it important to know both sides of a story? What is the abbreviation km? What is the difference from -27 to 0? How long is 135 meters? How many isosceles triangles can fit in an octagon? Chart of Roman Numerals 1 till 1000? If a figure is a square then it is a regular quadrilateral is it true or false?