Howdy and welcome to the forum!
Please post your code formatted properly. This link will show you how: [Essentials] How To Post/Format Your Code Correctly
That being said, notice the difference in these three lines of code (not the comment)? Only one of them is correct:
var showButton = ("#showButton");
// Create the variable 'hideButton' to store #hideButton
var hideButton = ("#hideButton");
var image = $("#image");