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?

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?

What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(x) − 4?

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 10^4 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 10^5 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.