In 2010 the national debt was around 13,316,000,000,000 dollars. How would this number be written in scientific notation?

a. 1.33⋅1013

b. 1.3316⋅1013

c. 1.3316⋅109

d. 13.3⋅1013

a) 1.33*10^13

Step-by-step explanation:

In scientific notation, we have the starting number which is between 1 and 10 which is multiplied by a power of 10.

The starting number is the first digit, then a decimal is placed with the next two digits. The power of 10 is determined by counting from 0 to the first digit.

So 1.33*10^13 is the answer