5/6 would be the best answer beside the other 2 choices that you have
Given equation is y=2x+7 and 
Let's simplify the 2nd equation
before we can start graph so that calculation will be easy

multiply both sides by 2 to cancel out fractions

y=2x+7
which is exactly same as the first equatoin so graph of both will be exactly same and solution will be infinitely many solutions.
y=2x+7 has y-intercept 7 so first point will be (0,7). Slope is 2 so rise 2 unit up then 1 right and graph the new point.
Answer:
1/9 use inverse.
Step-by-step explanation:
this is because you can use inversem since the word "of" indicates multiplication divide 1/27 and 1/3 and you get 1/3
The answer is area= 113.05 Circumference= 37.68