25 points for 1 question, i need correct answer quickly!

answer with the proofs. some are already there. just need 5 more proofs, use definitions, postulates, properties, etc.

don't answer if you don't know for sure.

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

Which of the following parabolas opens up?