Which of the following is not a characteristic of both experiments and observational studies?
A. The data collected might be studied for patterns.
B. The researcher does not control or change the population.
O C. The subjects are observed, and their behavior is recorded.
D. The researcher selects a sample of the population to study.
SUBMIT

he spend 5.1 minutes chatting with his friends

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5 1/10

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !