I think these two are the right answer.
Answer:
r
Step-by-step explanation:
The variable r is the dependent variable in the expression.
The value of r will depend on the value of d. The variable d will not affected even if you change the value of r.
The variable r will change depending on the value of d.
So in conclusion, the value of r will only change depending on the value of d.
i guess its anwer is 1007
