Dina started swimming at 3:35 P. M. She swam until 4:20 P. M. How long did Dina swim for?

Convert 2000 swiss francs to dutch guilders

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?

Find the distance between (7,-6) and (-3,-9)