The value of 7 in 870,541 is 10,000
answers B and D are clearly wrong and if u do some simple thinking you can determine the answer is C...
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Answer:
Step-by-step explanation:
f(x)=(x²+20x+100) -3 because : 97 = 100 - 3
f(x) = (x+10)² -3 ....vertex form