Given:

To find:
The missing value.
Solution:
Let x be the missing value.
We have,


Subtract
from both sides.




Multiplying both sides by 5, we get

So, the missing value is 3.
Therefore, the correct option is C.
Answer:
'The closest distance between Earth and Jupiter is greater than the closest distance between Earth and Mercury by approximately 7.66 times'.
Step-by-step explanation:
We are given that,
Distance between Earth and Jupiter = 5.9 × 10⁸ kilometers
Distance between Earth and Mercury = 7.7 × 10⁷ = 0.77 × 10⁸ kilometers
So, we see that,
5.9 × 10⁸ > 0.77 × 10⁸
Also, Ratio = 
That is,
'The closest distance between Earth and Jupiter is greater than the closest distance between Earth and Mercury by approximately 7.66 times'.
Answer:

Step-by-step explanation:
we have:

we also have:

from (1)(2) => proven
4x? because you solve the exponent