What is the answer to number 4 and how do i solve it

Part 1: Evaluate D(0): Value of D(x) when x=0
[tex]D(0)=5204[/tex]Part 2: Ealuate D(5): Value of D(x) when x=5
[tex]D(5)=-7412[/tex]Part 3: Determine D(0)-D(5)
[tex]\begin{gathered} D(0)-D(5)=5204-(-7412)=5204+7412 \\ \\ D(0)-D(5)=12616 \end{gathered}[/tex]