Answer:
209.96
Step-by-step explanation:
we know that the circumference of the circle is equal to
C = 
we have

substitute would be

assume that 
64
321-207 is actually equals to 114 but I mean the equation is false
The number is 15,
I really don’t know if there’s such a strategy to find this out, I just used trial & error:
(a*4)+(a*3)=35
(5*4)+(5*3)=35
20+15=35
The lowest must be ,,,,,when x=0
so
10y+30=0
10y=-30
y=-3
So your answer is (0, -3)
X=2 and you go up on the y-intercept 2 times and move 1 right.