High positive correlation<span>
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Hello,
Answer C
x²+x+1=(x²+2*1/2*x+1/4)+1-1/4=(x+1/2)²+3/4
You can just do rise over run to find the slope or use the slope equation which is

3=x1
0=x2
5=y1
-1=y2
input those and you can get the slope graphed.
The circumference of a circle with radius

is

. If the length of the radius is tripled, then the circumference becomes

, which is just 3 times the original circle's circumference.
Answer:
c
Step-by-step explanation: