Let f (k) = 8k5 + 5k– 9 and g(k) = -245 – 4k? + 1. Find the difference (f - 9) (k).
1025 +962 – 10
625 + k? – 8
1025 + ke? + 10
625 +92 +10

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?