Answer:
An inequality that represents the weight x of online orders that result in an additional fee would be:
x > 48
This inequality can be read as "x is greater than 48", which represents the weight of the order being over 48 pounds.
To graph this inequality on a number line, we can start by plotting the point 48 on the number line. Then, we can use a solid circle to represent the point 48, since it is included in the solution set. We can then use an arrow pointing to the right of the point 48 to indicate that all values to the right of 48 are also included in the solution set.
Graphically, this inequality can be represented as:
[48(solid circle)------> (x) (values greater than 48)]
Where x is the weight of the package and the solid circle shows that 48 is also included in the solution set.