As you are going through family records, you notice that your great-grandfather purchased 500 shares at $2.10 a share for a company called Bubba Gump Shrimp. When you search the internet for this company, you found that they list the value of their stock at $154.16 per share. You decide to sell all the shares and invest this into a retirement fund paying 9% annual interest. If you were to sell all your great-grandfathers shares, how much would you have to invest in your retirement?

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answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

thats not a system of equations, that is a solution