Respuesta :
its counts up by 2's. week 1 - 28. week 2 - 30. week 3 - 32. week 4 - 34.
Alfred types 2 wpm faster each week: 28 wpm after 1 week, 30 after 2, 32 wpm after 3. Thus, after 4 weeks, we predict that Alfred will be able to type 34 wpm.