When rounded to the nearest hundred, I am the smallest whole number that becomes 5000. What number am I?

The graph shows the rate at which paint is used to paint a wall.enter values to complete each statement below based on the graph.when 1 gallon of paint has been used, ( # ) square feet of the wall will be painted.the unit rate is ( # )square feet per gallon.

What is the value of x in the this question ?

Im literally having a mental breakdown