Help quick please im down bad

Asphere has a diameter of 10 in. what is the volume of the sphere?

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review

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?