I need help please and can you explain
ANSWER ASAP!!!!

The app uses 2^28 bytes.
Step-by-step explanation:
⇒ 4^4 × 2^20 = (2²)^4 × 2^20 = 2^8 × 2^20
= 2^8+20
= 2^28 bytes (using the law of exponents a^m × a^n = a^m+n)