Hello,
Let's assume x the time the express runs.
56*x=35*(1.5+x)
==>21x=52.5
==>x=2.5 h =2 h 30 min
The answer to your question is:
x^2 + 6/5x + 8/25;
Answer:
a number which produces a specified quantity when multiplied by itself.
Step-by-step explanation: