Check my work: Calculus
2 answers:
check the picture below.
since coordinate for the height of each triangle, is pretty much the left-endpoint y-value, then the upper estimate will be
2(8.7) + 2(7.6) + 2(6.8) + 2(6.2) + 2(5.7)
2(8.7+7.6+6.8+6.2+5.7) => 70.
notice in the picture, that the last endpoint of 5.3, is not really a left-endpoint, so the height of the last rectangle is not 5.3, but 5.7.
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Answer:
C
Step-by-step explanation:
The easiest way to determine this is to realize that time is the independent variable (n) and temperature is the dependent variable (a).
From the table, we can plug in the two points (n) into n of each equation and see if that equals the temperature values (a).
<em>A little thinking would get us to plug the numbers in C first.</em>
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<em>Works!!</em>
<em>Now, second number:</em>
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<em>Works!!</em>
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<em>Hence, C is the correct answer.</em>