Answer:
12.5
Step-by-step explanation:
To round to one decimal place you have to round the number to its "tenths". When you are rounding, any number which is 5 or above is rounded to the tenth above or in this situation 6 making it 12.5. But any number below 5 is going to be rounded to the tenth below so if the number was 12.44172 then the answer would 12.4. GL and mb if i messed up.