Can anyone explain how do i do this? im so confused

Twelve friends shared 8 small pizzas equally.how many pizzas did each person get?

Suppose the probability of selling a car today is 0.28. find the odds against selling a car today.

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field