The digit 6 in the hundred place represent the value

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

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?

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?