If it is rounded to the hundredths place, it would be 18.19 if it is rounded to the tenths place, it will be 18.2 and if it is rounded to the whole number, it will be 18.
Here’s why: Numbers that are [in the decimal] that are over or equal to 5 round the previous number up. For example: 0.16 would become 0.2. However, numbers less than 5 will not round the number. For example: 0.14 would remain 0.14.
B, I think, because by saying that the ice cube has a lower heat capacity means that it cannot stead heat enough to last longer then the water and pool.
