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:
hahaha me
Step-by-step explanation:
...actually how old are you though lol
Answer:
50 books were sold
Step-by-step explanation:
there are 5 books in the Red Crow row, and each book is worth 10 sold.
Answer:
75 Degrees
Step-by-step explanation:
Answer:
When we are trying to square a number say x, to x²,then we multiply the number x with number of powers
here since it is x² we multiply x × x
if it is x³,then x × x × x