How do you figure out 7 to the 2nd power?

Change 3.15 to fraction form? How many syllables does observe have? Is every next number of 6 is a prime number? Why do people look for large prime numbers? How many feet tall is 508 meters? What is the digit in the hundred thousandths place? Which sign shows the less than sign? What is 4 plus a half? What is the period of y equals tan2x? How many linear feet in one cubic foot that is three inches thick? What is the slope form for the equation -5x-6y-8 equals 0? How many miles can a train travel in one day? What is 33.3 percent as a fracion? What is 0.034 as a fraction? Is horizontal up down? How do you write 32.06 in expanded form? What is 2.0 x 10 to the five power? What is g dimension? How many miles can you expect from your car tires? What is the sum of the interior angles in a 54 sided regular polygon?