Help pls only right answers

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Hurry can a triangle can be constructed with angles measuring 115°,55°, and 20°? yes or no

Pleas its really urgent and i would really appreciate it! what is the value of x? enter your answer in the box. x =