H is equal to 3. need the solution?
Answer:
all work is shown and pictured
Answer: 
<u>Step-by-step explanation:</u>
To eliminate the exponent, apply log to both sides. This allows the exponent to become the coefficient, which can then be divided from both sides.

Hey there :)
Writing in scientific notation means a should be
0 ≤ a < 10
Therefore, 0.000309 will be written as
3.09 x 10ⁿ
3 is the 4th decimal place value
so n = - 4
3.04 x 10⁻⁴