Answer:
18.4
Step-by-step explanation:
Rounding to the nearest tenth focuses on the tenths place, or the first decimal in the number. Determining whether to round up (increase value), or round down (keep the same) depends on the value in the hundredths place.
Looking at the number:
18.3847
The rule goes that if the hundredth place value is greater than or equal to 5, you round up the tenths, anything else remains the same.
The value of 8, which is >5.
Thus we increase the tenths and drop the other decimals
18.4
