How many are 5 raised to 2 ???

After two years, how much has been paid into interest?

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

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?