Final answer:
To write 3.574 to 1 decimal place, you round the digit in the tenths place to the next higher number if it is 5 or greater.
Step-by-step explanation:
To write 3.574 to 1 decimal place, we need to look at the digit in the tenths place. The digit in the tenths place is 7. Since 7 is greater than or equal to 5, we round up the digit in the ones place to the next higher number, which is 4. Therefore, 3.574 rounded to 1 decimal place is 3.6.