I’ve been stuck on this all day please help me with an explanation I still need to solve it myself I just need any help on what the 3rd one could be

Need on this geometry question. explain how you did it.

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.