How would you solve this word problem in one variable inequality form?

The maximum safe water temperature in a spa is 104 degrees. The water temperature in bill's spa is 102 degrees. The temperature is increased by, d, degrees. Write and solve an inequality to show the values of t for which the water temperature is still safe.

102 + d ≤ 104

d ≤ 104 - 102
d ≤ 2