Answer:
x = 2
Step-by-step explanation:
55-42=13
13 brought up to 14 so it can be divided by 7
14 / 7 = 2
Answer:
6
Step-by-step explanation:

Answer:
D. 
Step-by-step explanation:
given equation: 
I’m pretty sure it is 40 to the power of 9. I’m sorry If i get that wrong. But i’m pretty sure that it