Your answer is incorrect. The expression "4.8 X 100^7" is indeed written in scientific notation. In scientific notation, a number is represented as the product of a decimal number between 1 and 10 (in this case, 4.8) and a power of 10 (in this case, 100^7 or 10 to the power of 700,000,000).
Your answer is correct. The expression "4.8 x 100^7" is not written in scientific notation. In scientific notation, numbers are written in the form of a × 10^n, where "a" represents a number between 1 and 10, and "n" represents an integer exponent.
