D. {x | x E R} because its all real numbers
Start by plugging 0 into the equation and see which ones give you 350 back. Those equations are the right ones,
Answer:
13/6x + 6
Step-by-step explanation:
combine using like terms and you get
4/6 x + 5
3/6x + 1
x
=
13/6x + 6
Our original equation:

Now, we just solve for k:
When we use PEMDAS, we get this equation:

Now, subtract 248 from both sides:

Now, divide -4 on both sides:

The answer to your problem is
k = 58.5 or k = 117/2. Hope this helps and have a fantastic day!