Answer:
use speed distance and time mdthof
Answer: 4.2 kilometers after 3 minutes bc its 1.0729 kilometers after 1 minute. then it doubles every minute .
Step-by-step explanation: speed= distance divided by time method
(a) 6x + (x + 12) = 180
(b) m<1 = 144 m<2 = 36
Step-by-step explanation:
7x + 12 = 180
7x = 168
x = 24
6(24) = 144
(24) + 12 = 36