The answer would be ATP because oxygen supplies the energy and the others regulate and control it.
Pick A that is the one I would go with.
The equation which represent total amount of income he earns from selling book is, 
Since, Selling price of one novel is n dollars
So, selling price of b books is, 
Since, he receives 9% commission on each book sale.
So, total commission he receives on selling of b books is,

And also he received a bonus of $50,000 to sign the contract to write the book,
So, total amount of income he earns is represented by A,

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Answer:
It would take 54 minutes.
Step-by-step explanation:
Since the miles are divided by 9 and it takes Molly 6 minutes to run 1/9 of a mile, you would multiply 6 by 9.
6x9 = 54
The straight lines mean absolute value
so x = -16 and x = 16