First start by subtracting 9x from both sides and getting 14=4x-10. Then add ten to both sides getting 24=4x. Then divide 24 by 4 and you get x=6
Answer:

Step-by-step explanation:
Given

Required
Rewrite using scientific notation, then find n

Express as fraction

This can be splitted to

The first number must be between 1 and 10; hence, 25 can be expressed as 2..5 * 10

Apply law of indices


Comparing n, the given options

Answer A. That is the only one. The rest are not true. Hope his helps! I would appreciate it if you gave me brainliest. Thanks! =D