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
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