Kevin threw a ball straight up with an initial speed of 20 meters per second.

The function h(t) = –5(x — 2)2 + 20 describes the ball’s height, in meters, t seconds after Kevin threw it. What is the maximum height of the ball?

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A)
2 meters

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B)
5 meters

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C)
10 meters

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D)
20 meters

The stem-and-leaf plot shows the heights in centimeters of teddy bear sunflowers grown in two different types of soil. soil a soil b 5 9 5 2 1 1 6 3 9 5 1 0 7 0 2 3 6 7 8 2 1 8 3 0 9 key: 9|6 means 69 key: 5|8 means 58 calculate the mean of each data set. calculate the mean absolute deviation (mad) of each data set. which set is more variable? how do you know?