What does the slope of the graph tell us in the situation? A. It tells us that there is a fixed cost of approximately $35 for ordering hats.

B. It tells us the amount that the total cost increases for each additional hat ordered.

C. It tells us that when 9 hats are ordered, the total cost is approximately $160.

D. It tells us that when the number of hats ordered increases by 10, the total cost increases by approximately $175.

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.  

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