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Answer:
6.3 and 14.7
Step-by-step explanation:
To find how many number of trees we need we do:
10.5/5 = 2.1 trees
So Meryl needs 2.1 trees for every cabin.
To find the next answers we simply multiply 2.1 x the number of cabins, so
3 x 2.1 = 6.3
7 x 2.1 = 14.7