W-4 LAB problem

I can’t seem to figure out the issue

There is a problem with these multiplicants, can you check their type and make sure they are the same, that’s the error points out anyways!

I did , I mean the first 2 exercises were completed, I tried using the hints and all still it Shows the same error.

Maybe use a print type statement inside those functions so you can see why their type seems not be as requested.