David recorded his finishing time, in seconds, for each time he ran the 100 m race during one track season. what was the median of his finishing times?

11. 9 11.9 12.0 12.1 12.1 12.2 12.3 12.4 12.4

10x

step-by-step explanation:

the greatest common factor 30 and 20 is 10

5 is a common factor of 30 and 20 but 10 is also a factor and 10 is greater than 5 so 5 will definitely not be apart of our answer

now the most amount of x's you factor our is just 1 factor of 1

so 10x the gcf of the terms in the polynomial