f(n)=15n2+5n
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very small
A billion - 109.
One kilo can be expressed in scientific notation as 10^3.
Scientific notation is a way of writing a number that is too big or small to say. ex. 1,850,000,000,000 in scientific notation is 1.85 x 1012 .000000000014 in scientific notation is 1.4 x 10-11 You do this by moving the decimal point until you have a number between 1 and 10. Then you write that number x 10 to the power of the number of spaces you moved the decimal point. If your decimal is moved to the left, your exponent is positive, move it to the right and your exponent is negative.
scientists use scientific notation to reduce the number of zeros in very big and very small numbers. -----by khandkar.