Answer:
1) 1.51 * 10^-3
2) 1.55 * 10^-2
3) cannot be turned into scientific notation
4) If 15,347; 1.53 * 10^4 but If 15.347; 1.53 * 10^1
Explanation:
Scientific notation just means moving the decimal place of a number so that there is only one number in the one's place (the exponent on the ten is the number of times the decimal moved). It is used to write really big or really small numbers without having to write a bunch of zeros.
