Which statements are true

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?

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?

Ineed on this question me get the answer