Using the image attached. The option that shows the marginal rate of substitution is option b.
<h3>What is marginal rate of substitution?</h3>
The marginal rate of substitution (MRS) is known to be the number of a good that a consumer is said to be willing to take in when compared to another good, only if the new good is said to be equally satisfying.
The marginal rate of substitution (MRS) is also described as the rate in which a specific units of an item is said to be replaced by another only if by giving the same amount of satisfaction to its consumer.
Hence, The MRS concept tells about the association between the taking in of two goods or resources if consumers are said to make rational decisions.
Hence, the option that satisfy the above is option B. Therefore, Using the image attached. The option that shows the marginal rate of substitution is option b.
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The product of expressions or numbers is calculated by multiplying the expressions or numbers.
- The incorrect value in the table is

- The value that should have been written is

From the table (see attachment), the incorrect product is given as:

The above product is incorrect.
This is so because when -y is multiplied by 2x, the result is 
So, the correct expression is:

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In paragraphs, a stated main idea is called the topic sentence.
The correct answer to this open question is the following.
Decide whether the elements of a typical conclusion paragraph are in the correct order.
So this is the correct order.
1.- summary of the main thesis.
2.- restatement thesis.
3.- satisfying close.
This is the explanation. When you are writing a conclusion, you have to be precise, summarize the main ideas of the document, not adding something new or different, restate the thesis, and give direct-to-the-point closing ideas so the reader can get the main purpose of the document clear.
Writing a good conclusion is very important because it represents the last idea that you want to convey to your readers and formally ends your essay.