Answer :

Noah is 5 inches taller than Elena.

Based on the information given:

a. Completed table:

Person | Andre | Lin | Noah

How much taller than Elena | 4 | 6 1/2 | d

Person's height (inches) | 59+4 | 59+6 1/2| d

Heights =

Andre = 63

Lin = 65 1/2

Noah = d + 59

b. If Noah is 64 inches tall, we can substitute his height in the table:

Person | Andre | Lin | Noah

How much taller than Elena | 4 | 6 1/2 | d

Person's height (inches) | 59+4 | 59+6 1/2| d

To find the value of "d," we can subtract Elena's height from Noah's height:

d = Noah's height - Elena's height

d = 64 - 59

d = 5

Therefore, Noah is 5 inches taller than Elena.

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