Step-by-step explanation:

If a^ x = b then:
x = log_{a}b
For:
4^{7} = 16384 \\ log _{4}16384 = 7
There is 1 gram is a milliliter and grams to milligrams is 16,000
so 16,000 is your answer
9.55 as a mixed number would be 9 11/20.
9.55 = 9 55/100 = 9 11/20
Hope this helps !
-25, -23, -16, -13, -4, -2, +17, +15, +14, +7, +9
HOPE I HELPED