Carrierwaveをインストールしたのですが、画像が表示できません。

私はruby on railsをprogateで学習中で、その応用としてCarrierWaveを使って
画像投稿機能を実装してみたいのですが画像が表示されません。誰か教えていただけないでしょうか？

routes
1Rails.application.routes.draw do
2  get 'users/index'
3  #get 'home/top'
4
5  get "login" => "users#login_form"
6  post "login" => "users#login"
7  post "logout" => "users#logout"
8
9  post "users/:id/update" => "users#update"
10  get "users/:id/edit" => "users#edit"
11  post "users/create" => "users#create"
12  get "signup" => "users#new"
13  get "users/index" => "users#index"
14  get "users/:id" => "users#show"
15  post "users/:id/destroy" => "users#destroy"
16
17
18post "/posts" => "posts#create"
19
20  get "posts/index" => "posts#index"
21  get "posts/new" => "posts#new"
22  get "posts/:id" => "posts#show"
23
24  post "posts/create" => "posts#create"
25
26  get "posts/:id/edit" => "posts#edit"
27  post "posts/:id/update" => "posts#update"
28  post "posts/:id/destroy" => "posts#destroy"
29
30
31  get "/" => "home#top"
32  get "/about" => "home#about"
33
34
35
36  match '*unmatched',to: 'application#route_not_found',via: :all
37  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
38end
39

index
1<div class="main posts-index">
2  <div class="container">
3    <% @posts.each do |post| %>
4      <div class="posts-index-item">
5        <div class="post-left">
6          <!-- ユーザーの画像が表示されるように、以下のsrcに値を追加してください -->
7
8    <img src="<%= "/#{post.user.image_name}" %>">
9        </div>
10        <div class="post-right">
11          <div class="post-user-name">
12            <!-- link_toメソッドを用いて、ユーザー詳細ページへのリンクを作成してください -->
13
14          </div>
15            <%= link_to(post.content, "/posts/#{post.id}") %>
16
17            <% @posts.each do |post| %>
18                 <tr>
19                   <td><%= image_tag post.image.to_s %></td>
20                 </tr>
21            <% end %>
22
23        </div>
24
25      </div>
26
27    <% end %>
28  </div>
29</div>
30