Answer:
-3(4x+3)+5x (Given) 1/2 (6k+10)+5k (given)
-12x-9+5x (distribution) 3k+5+5k (distribution)
-12x+5x-9 (associative) 3k+5k+5 (associative)
-7x-9 (Combine like terms) 8k+5 (combine like terms)
Step-by-step explanation:
First find how many seconds it would take by dividing distance by rate:
600 feet / 5 feet per second = 120 seconds.
Convert seconds to minutes: 1 minute = 60 seconds:
120 seconds / 60 seconds per minute = 2 minutes