The zero exponent means that it will be equal to one(1) because any number that is raised to zero(0) is one(1). Negative exponents, on the other hand, must be changed into its reciprocal for it to become positive. And lastly, the scientific notation is written as a times the power of "a times the power of 10" where a is an integer not greater than 10.
Sorry Ma'am if I only made it today because I thought you will give us a chance to work on this after the periodical test. I hope you understand. Thank you..
[ingat..God bless..]