Answer:
2000 times
Step-by-step explanation:
Given
Sara:


Sam:


To determine the number of times, the mass of Saturn is greater than the mass of Mercury, we simply do the following:

Using Sara's measurement; this gives:

Apply law of indices




Approximate


Multiplying to make the same in a different like 3/5x5/5 = 3/5
Which is the same as 3/5
To find this, just plug the numbers into the expressions.
5x = y
5(2) = 7
10 = 7
So it can't be A.
x + 2 = y
2 + 2 = 7
4 = 7
x + 4 = y
2 + 4 = 7
6 = 7
2x + 3 = y
2(2) + 3 = 7
7 = 7
The correct answer is
D. 2x + 3