C 4and 12 are the factors of 48
To read this stem and leaf plot you will look at the values to the left as Doctor 1 and values to the right Doctor 2.
Please see my attached work for the data set.
My work also shows the means and the medians to compare.
To find all the possible combinations, you will multiply all the choices together because you can groups each choice with any of the other.
4 x 6 x 2 x 3 = 144
There are 144 choices.
Think of the first option, you can combine 1 small toy with any of the other options for each toy.
Answer: C) 1/a^12•b^8
Step-by-step explanation: