third one is the correct answer.
Answer:
5.23×10^5
Step-by-step explanation:
You mean 56.23×10^4?
That would be 5.623×10×10^4, or 5.23×10^5
it the second one
b/c 18times it self 2in x-1 is just talking it a way bone
ya 5x is the right anwser
