Answer:
v = Δs/Δt
Step-by-step explanation:
This: Δs is the change in speed or can also be the rate
This: Δt is the change in time
v=d/t
if i remember correctly the answer is 120*
Step-by-step explanation
3x-21+20=12+2x-6
3x-1= 6+2x
3x-2x=6+1
x=7
90+0.30m = 70 +0.40m
90-.10m= 70
-0.10m=-20
m=200
more than 200 miles
