If the sequence 10,2x,3x ... Is geometric, what are the values of 2x and 3x? Show all of your work or explain your thinking clearly.

It looks that have to multiply each term by 10. So we have:

 

1, 2, 3, 4, 5...........etc. Multiply each term by 10 and you have:

10, 20, 30, 40, 50......etc.