A researcher was interested in the mean wait time in South Carolina emergency rooms. 3 emergency rooms were randomly selected and all of the wait times were entered into the data set. This is an example of sampling.

Select one:
simple random
stratified
convenience
cluster

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

it is c, trust i got your back lol

step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.