A town council wants to conduct a survey on town policies using a random sample of residents. Which method would result in a random sample?

A: Ask all residents having lunch at a local restaurant.

B: Ask the first 5 residents who visit town hall after it opens.

C: Draw slips of paper with names of residents out of a large box.

D: Print survey forms on postcards and have residents mail their responses.

C. Draw slips of paper with names of residents out of a large box.

Step-by-step explanation:

c is the only one where the results are truly random

sorry don't really know how to explain it rather than looking at the definition

equal to

step-by-step explanation:

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: