Answer:
<h2>k > 4.4</h2>
Step-by-step explanation:

Answer:
Combined time: 55.316 seconds
The difference in times: 0.856 seconds
Tips:
It is addition and subtraction. A basic calculator should help with any other questions such as this one!
If I understand correctly, you went wrong because you solved for Y instead of M, like the question dictates.