Is a proper subset different from a regular subset? is an empty set a proper subset? provide an example of a set for both a proper subset and an empty set.
i need 150+ words answer, and you for whoever does this for me.

Find percent notation for 0.008 0.008=

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?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?