PLEASE HELP WITH THIS FUNCTION​

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?