Answer:
The question
after change the mixed number to improper & using KCF will become : 
Option B is correct option.
Step-by-step explanation:
We need to change the mixed number to improper & use KCF to rewrite the question.
The expression is: 
First converting mixed fraction into improper fraction
Multiply whole number with the denominator i,e (3*2=6) now add the numerator i.e (6+1) = 7/2
Solving:

Using KCF
KCF stands fro Keep it, Change it, Flip it.
It is used when division sign is converted to multiplication the term (1/3) is reversed to (3/1)
So, our expression will be

So, The question
after change the mixed number to improper & using KCF will become : 
Option B is correct option.
Answer:
Kimmy balance in December will be $545.21.
Step-by-step explanation:
Given:
Balance in account in June = $76.23
Now Given, by September her balance is 5 time as much as her June
It means that Balance in account till September is 5 times Balance in account in June.
framing in equation form we get;
Balance in account till September = 
Also Given:
Balance Deposited in account between September and December = $87.83
Now We need to find balance till December.
Kimmy balance till December will equal to sum of Balance in account in June and Balance in account till September and Balance Deposited in account between September and December.
framing in equation form we get;
Kimmy balance till December = 
Hence Kimmy balance in December will be $545.21.
Since Abby moved faster, she weighs less than Ben.
The ratio between their speeds should be the same as the ratio between their weights.
So, Ben weighs 52.5*1.59/1.22 = 68.422kg
Answer:
0.0625 hours per dollar
Step-by-step explanation: