Responses/hints:

Mr. Dithers is easy, 22 times $1000 is $22,000.

For Dagwood, you could just calculate each week and add on your calculator or you might notice that Dagwoods salary is 2^n-1 for the nth week, so it would be 2²¹ =2097152, or $20,971.52 for the 22 week.

The total for a sum of this type is 2²²-1 (why?).

What would this total be?