The formula is the area of the base times the height.<span>
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20 because 19 16/33 is the exact answer. Since they ask about how much that can be rounded up to 20
D is the answer
(4+8)+1 = 13
4+(8+1) = 13
Therefore equation D is true
This just wants the derivative which you can solve for.
You can do this using a negative expononet or using ...the rational rule forget its name*.... you shoudl get 9000/(t+12)^2
*Quotient rule
