The given inequality is c<5.
So all the values less than 5 are solutions to the inequality.
To graph this on a number line, we have to consider representing the value 5. Here 5 is not a solution where as anything even slightly less than it is a solution.
Hence, 5 is marked with a hollow circle, stating that it is not a part of the solution and a line is drawn to the left of 5 to show that all the values less than 5 are solutions to the inequality.
Please refer attachment for the graph of the number line.
