The steps and final answer is shown in the attached image. I wrote it there so I could write out complex algebraic formulas. Let me know if you have any questions about any of the steps. Thank you.
1-4c>0
1>4c
1/4>c
so c should be lower than 1/4 like -2.
8 plus 4 is 12 and 8 would be twice as much as 4 which is the tens place