1)which of the following expressions is written in scientific notation? A)73.4 X10^5B)0.09X10^7 C)80X10^3D)4.22X10^-32)which of the following is 0.0000000708 written in scientific notation?A)7.08X10^-8B)7.8X10^-8C)708X10^-10D)70.08X10^-93)which expression represents the largest number? A)6.1X10^-7B)4.1X10^-7C)3.1X10^-8D)5.1X10^-84)which expression is equal to 1/8000 written in scientific notation?A)8.0X10^3B)1.25X10^-4C)125X10^-5D)1.25X10^4does anybody know :)