Answer:
(LAST OPTION)
Step-by-step explanation:
You have the following expression given in the problem:

If the expression on the left side of the equation is equal to the expression on the right side of the equation, and the problem asks to rewrite it as a system, you can conclude that the first equation is:

And the second equation is:

Therefore, you can set up the following system of equations:

Step-by-step explanation:
What is the molar mass of an element?
the total number of particles in one gram of the element
the mass of 6.02 x 1023 representative particles of the element
the number of amus (atomic mass units) in 6.02 x 1023 moles of the element
1.0 gram divided by the atomic weight of the element
No Jane is not correct she has 25 cents where john has 30 cents