100.15 rounded to the nearest tenth

100.2

Step-by-step explanation:

nearest tenth = 1 decimal place

100.15

We look at the 5 and it can round 1 up

100.2

Step-by-step explanation:

To round up a number, we would round it up if it was above five and round it down if it was below.

However, since it is directly 5, we would round it up

Hope this helps! Brainliest please :D