Area of a square is side length^2
Area = 15^ 2 = 15 x 15 = 225 square inches.
41+0.10x = 31+0.15x
10 +0.10x=0.15x
10=0.05x
x=10/.05
x= 200 text messages
check 200*0.10 = 20 +41 =61
200*0.15 = 30+31 = 61
they equal each other so number of texts is 200
the answer is -9
hope it helps
