Well now, what we need to remember is that when rounding up we can only do that if the number is 5 or above 5.
We also need to know what place is the tenths place.... 287.9412 ^ there you have it!
Now if we look at the number before it.... it's a 4 but that is less than 5 so we need to round it down... our answer would be 100%:
287.9
Therefore, that is The Correct Answer^^^ 287.9.
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