Twelve people were surveyed and asked how many people live in their residence. The results are summarized in the table below. What is the median number of people per residence? Round to one decimal place if needed.

a. The median is 2 people per residence.
b. The median is 2.5 people per residence.
c. The median is 2.8 people per residence.
d. The median is 3.5 people per residence.

EDGE Please HELP!

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.