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Ede4ka [16]
3 years ago
9

Let y represent the total cost of publishing a book (in dollars). Let x represent the number of the copies of the book printed.

suppose that x and y are related by the equation 15x+1100=y
a) What is the change in total cost for each book printed?

b) What is the cost to get started (Before any books are printed)?
Mathematics
1 answer:
Oduvanchick [21]3 years ago
6 0
Im sorry idk this answer

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Answer:

\#\text{ of 8-onion bags: }4,\\\#\text{ of 3-onion bags: }3

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Let a be the number of bags with 8 onions and let b be the number of bags with 3 onions. We have the following system of equations:

\begin{cases}a+b=7,\\8a+3b=41\end{cases}

Subtracting b from both sides of the first equation, we get a=7-b. Substitute this into the second equation:

8(7-b)+3b=41,\\56-8b+3b=41,\\56-5b=41,\\-5b=-15,\\b=\boxed{3}

Therefore, the number of 8-onion bags is:

a=7-b,\\a=7-3,\\a=\boxed{4}

Thus, the chef got 4 8-onion bags and 3 3-onion bags.

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