Hopefully this helped! I used the substitution method
Answer:
4.5 mph or 9/2 mph
Step-by-step explanation:
Let x be the rate of the current
Formula: Distance = rate x time
where rate upstream =(12-x) and time =2 hours
15=(12-x)(2)
15=24–2x
2x=24–15
2x= 9
x=9/2=4.5 miles per hour (rate of current)
Could you past the graphs. I would like to help:)
3x + 18 + 12x + 12
15x + 20
Yes because you did the exact same thing on the different side
