Can someone ! i have no clue what im doing

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?