Help please, i literally suck at geography

What are the 5 basic elements of a map?

Match the graph type to its description. 1. uses symbols to describe information pie 2. compares different quantities at the same point in time line 3. compares increases and decreases in a quantity over a period of time bar 4. shows the relationship of parts to each other and to the whole pictograph

Solve for r in the formula v = ir, when i = 5 and v = 15.