If 300 rich people on Earth have the same amount of wealth as 3,000,000,000 poor people, then 5 rich people would have the same amount of wealth as poor people. Fill in the blank.

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.