Answer:
bytes
Explanation:
Bytes PER PIXEL = 4 * 10^0
Also, photographs have 2.2 * 10^6 PIXELS
hence, the number of bytes in 1 photo is the multiplication of both:
(4*10^0) * (2.2*10^6)
How do we multiply? Using the rule shown below:

basiallly multiply the coefficients (constants) and add up the powers. Thus:

There are
bytes