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

Given the function D(x) is defined as shown in the table
Part 1: Find D(0)
So, from the table, we will choose the value of D when x = 0
So,
[tex]D\mleft(0\mright)=5204[/tex]Part 2: Evaluate D(5)
We will choose the value of D when x = 5
[tex]D(5)=-7412[/tex]Part 3: Determine D(0) - D(5)
So, we will subtract the values of part1 and part2
[tex]D\mleft(0\mright)-D(5)=5204-(-7412)=5204+7412=12616[/tex]