Answer:
7x - 12 3/4
product of 7 and a number x: 7x
12 3/4 less than the... : - 12 3/4
Multiply 3/4 and 6 inches, which gave me 4 and 1/2 as the area.
The proportion that models the problem would be x/850 = 11/17. :)
You add each step from +5 to +10 to get 55
