What’s a constant value

Ihonestly don’t understand this at all

The sixth grade art students are making a mosaic using tiles in the shape of right triangles.each tile has leg measures of 3 centimeters and 5 centimeters.i f there are 200 tiles in the mosaic what is the area of the mosaic.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?