Question

COMPLET THE PAIRS.

Answer 1

The simple method is reading carefully the question:

A. number of donuts delivered 2 hours from now.
2. Next=now +60+60
starting at 48                      because 2 hours meant  2*60 = 60+60

B. number of donuts delivered 7 hours from now C
3.Next= now +420
starting at 48                     because 7 hours meant  7*60 = 420 mn

C. number of donuts delivered n hours from now.
4. Next=now+60n
starting at 48            (this is obvious)

so finally, 
 D. number of donuts delivered 6 hours from now.
1. Next= now+ 6*60
starting at 48