I am a four-digit number. I am divisible by four. The product of my hundreds and tens digits is 36. The sum of my thousands and hundreds digits is five. The sum of all my digits is 16. What number am I?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?