Step-by-step explanation:
x increased by 6 is :
= x+6
The answer to the question is 2,085,000
Add the three angles and set them to 180
4x-13+15+x+18=180
5x+20=180
5x=160
x=32
Then plug in to get A and C
A=4*32-13
A=115
C=32+18
C=50
He would need 728 ft of fence in order to build a fence. 28 x 26 would equal 728.