Answer:
B) 3
Step-by-step explanation:
add 5 to both sides, 4x=12
divide both sides by 4, x=3
Answer: X= 6 or X=-4
Step-by-step explanation:

7.87 is what i got :) good luck!!
Answer:
14 inches
Step-by-step explanation:
Perimeter of a rectangle
= 2(l + w)
Given length L = 3 inches and
Width w = 4 inches
Perimeter = 2(3 + 4)
Simplify the bracket
2 x 7
14 inches
It's diameter is 17.98. (I'm pretty sure I'm right I even used a calculator, if not sorry)