All organic matter contains carbon 14 a radioactive substance. An organisms level of carbon 14 begins to decrease when it dies. A museum has a fossil and you know about how old it is. To determine what percent of carbon 14 levels are in the fossil, what number do you substitute for b in the half life formula y=b(1/2) to the t/h power

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when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

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answer: $1794

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the answer to your question is b.