Amanda was 48 inches. She grew #n# inches, and is now 56.5 inches. How do you write an expression that represents the number of inches Amanda grew?

1 Answer
AAA
Nov 5, 2015

#n= x_2 - x_1#
#n= 8.5# in

Explanation:

Amanda's first height #= x_1#
Amanda's second height #=x_2 = 56.5# in
#x_1 = 48# in
#x_1 + n = 56.5# in
#48# in#+ n = 56.5# in
#n= 56.5# in# - 48 # in
#n= x_2 - x_1#
#n= 8.5# in

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