The distance 'd' to school is 1 1/2 miles more than the distance 'p' to the park.

write an equation or inequality to model the situation.

To facilitate the calculations, we will assume that both the distances 'd' and 'p' are in miles.

Now, we need to translate the English into mathematical equations:
It is mentioned that the distance 'd' is more than the distance 'p' by 1.5 miles.

This means that if you add 1.5 miles to the distance 'p' the output will be distance 'd'.
This can easily be interpreted into a mathematical equation as follows:
d = p + 1.5

It also means that if you subtracted 1.5 miles from the distance 'd', the output will be distance 'p'.
This can be interpreted into a mathematical equation as follows:
p = d - 1.5