Answer:
Liam's rate = 3 meters per second
Edgar's rate = 3.2 meters per second
Edgar swims faster
Step-by-step explanation:
<u>Liam:</u>
The equation
gives the distance, d, in meters that Liam swims with respect to time, t, in seconds.
When 
When 
Rate of change:

Liam's rate is 3 metres per second.
<u>Edgar:</u>
When 
When 
Rate of change:

Edgar's rate is 3.2 metres per second.
Edgar swims faster.
18/20=0.9
Move decimal two spaces to the right and include percent sign
90%
Step-by-step explanation:
first tiu need to find a common denominator. that's would 21. I hope you know what to do lol. then you make them improper fractions. SONT FORGET TO SIMPLIFY.
About 100. (Im not quite sure)
Answer: 101000
Step-by-step explanation: It would be rounded to 101000 because the nearest 100 would be a 1000.