Answer:
x = 2
Step-by-step explanation:
x/(x+1) = (x+6) / (x+10)
the 10 comes from 9+1
Then cross multiply and solve for x
the terms cancel out just leaving behind a nice linear function.
The unit rate would be 48.5 miles per hour because you would just divide 194 and 4 and get the ratio of 48.5:1
2/3 > 9/12 because 2/3 is closer to a whole
20/7 as a mixed number is 2 6/7
9/4 as a mixed number is 2 1/4
22/5 as a mixed number is 4 2/5
4/3 as a mixed number is 1 1/3