Can anyone tell me the answer to these problems?

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee