What is the value of 5.7 x 10^8?
a. 5,700,000,000
b. 57,000,000
c. 570,000,000
d. 5.7

5.7 x 10^8 is known as the scientific notation.Scientific notation is one way of showing a long number to a shorter one given with the followin choices, let's find out which one of those are correct: 
=> 5.7 x 10^ 8
=> 5.7 x (10 x 10 x 10 x 10 x 10 x 10 x 10 x 10) 
=> 5.7 * 100 000 000 
=> 570 0000 000 or 5 hundred seventy milionThe correct answer is letter C. 570 000 000