Answer:
Explanation:
This is all about the symbols and how they are pronounced; it's also about what they mean in less formal language.
h is less than 21: h < 21
h is greater than or equal to 21:
(notice the half-an-equal sign under the greater than sign)
h is less than or equal to 21:
h is equal to 21: h = 21
h is greater than 21: h > 21
Learn these well, and they'll be your friends for life!