430 in scientific notation would be

Explanation:

Here, we need to write 430 in scientific notation. A number can be expressed in terms of scientific notion as :

Where

x is a real number

y can be any integer

The given number can be written in the form of scientific notation as :

Here, x = 4.3

y = 2

Hence, this is the required solution.                                                                                                  

d. air pressure decreases as altitude increases.