15,19,26,51,18,21,22,33,31,20,28,19,18
X - the score he must get

He must get at least 92 points.
I think this should be the answer!!
One polynomial identity that crops up often in various areas is the difference of squares identity:
A2-b2=(a-b) (a+b)
We meet this in the context of rationalising denominators.
Answer:
0.5
Step-by-step explanation:
I found this out because I am smart