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:
96
Step-by-step explanation:
25% is 1/4 of 100%
thus, if you multiply 24x4 you get 100%
Answer:
x + 2y
Step-by-step explanation:
so 3x + 2y - 3x, group the like terms 3x - 3x = x
So x + 2y, i think i did that right
Answer:
True, True, False, True
Step-by-step explanation: