May I receive help with question one. I’m sorry I need all this help. I haven’t been in school in 20 years thank you in advance

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

Is the square root of 4 plus the square root of 16 rational?

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