(9 x 10^-3)^2 simplify and write in scientific notation

can be written in scientific notation as

Step-by-step explanation:

A number is written in scientific notation if it can be written as where p has value greater than or equal to 1 and less than 10 and x is an integer.

Given -

First applying  

We get,  

using property of exponents

Thus, we have to write in scientific notation,

Multiply and divide by 10 , we get

Thus, can be written in scientific notation as

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation:

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)