Cheap, Inexpensive
い adjective
This is a single kanji with an い at the end, meaning you know it's probably an adjective. One of the meanings of 安 is cheap, so this is just that as an adjective, cheap. Time to go to a 100円 shop and get some 安い goods, ammiright?
やすい
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: "Would you like this item for cheap?" "YAASS (やす), please!"
カメルーンのフルーツはとても安い。
Fruit in Cameroon is very cheap.
私は安いホテルでも平気ですよ。
I'm fine with a cheap hotel.
日本一安いスーパーマーケットへ、ようこそ！
Welcome to the cheapest supermarket in Japan!