Answer:

Kelly is correct.
Step-by-step explanation:
One person is able to plant 4 trees
Let x be the number of people
y be the number of trees
The situation is represented by

5 people are able to plant 20 trees

So, the situation is represented by 
Hence, Kelly is correct.
Answer:
Either A or C I think, Good luck!!!
Step-by-step explanation:
the answer would be 10 because you have to times by 2.5 on both sides to get t on its own.
4 × 2.5 is 10
Answer: False
Step-by-step explanation:
398 + 9 = 407
400 + 8 = 408
If the equation was 398 + 10 then yes it will be equal to 400 + 8
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