Which statement best describes a difference between electromagnetic waves and mechanical waves?

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test