Answer:
C
Step-by-step explanation:
We need to isolate the D, but in order to do so, we have to make some changes to both sides of the inequality.
First, we need o add 31.2 to both sides of the inequality:
36 + 31.2 ≤ 1.02D ≤ 41 + 31.2
67.2 ≤ 1.02D ≤ 72.2
Now, divide all side by 1.02:
67.2/1.02 ≤ D ≤ 72.2/1.02
65.9 ≤ D ≤ 70.8
Thus, the answer is C.
Hope this helps!
