Answer:
The Ruiz family's laptop has the greater initial resale value.
During the first four years, the resale value of the Sawyer family's laptop decreases at an average rate faster than the resale value of the Ruiz family's laptop.
Explanation: I just took the Edmentum test on this
Also: If you multiply the 620 (the initial resale value of the Sawyer family's laptop) and multiply it by 0.85 once, you'll get the value of week 1. Take that total and multiply it by 0.85, you'll get the value of week 2.
Like this: 620 x 0.85 = 527 (week 1)
527 x 0.85 = 447 (week 2)
447 x 0.85 = 379 (week 3)
379 x 0.85 = 322 (week 4)