Answer:
x = 3
Step-by-step explanation:
3x + 2 = 11
-2 -2
3x = 9
÷3 ÷3
x=3
3x+2=11
3x=11-2
3x=9
x=9/3
31
14.1 feet
Draw a diagram to get a triangle, and label it. use the pythagorean theorem, a^2+b^2=c^2