Angular2-React | angular2 convenience component for using react | Frontend Framework library

I have a FormArray with a list items under it. I want to create a button to remove an item under an ArrayForm. When I click the button, it clear the form value, but it doesn't remove the item from the front end. Not sure where i'm missing.

app.component.ts

I have three rows of radio button on a Material Table. However, it only shows one checked for all of them. Although I can modify the data of the radio buttons.

app.component.html

I have created simple reactive form with text input and when form is being submitted I want to pass along image from file input. Every time I google I get tutorials, where they show me how I can upload file, but it is being done without other input field. I understand how to do that, what I don't understand how to submit both my form along with file input in one submission.

In my scenario, am I not supposed to user reactive forms and instead simple new FormData() and append every input into that?

If I can do that, leave me simple example.

edit: How to include a file upload control in an Angular2 reactive form? This is not answer. Answer market there is not posting file along with reactive form, it is posting file alone.