A university's housing and residence office wants to know how much students pay per month for rent in off‑campus housing. The university does not have enough on‑campus housing for students, and this information will be used in a brochure about student housing. They obtain a list of the 12 , 304 students who live in off‑campus housing and have not yet graduated and mail a questionnaire to 200 students selected at random. Only 78 questionnaires are returned. (a) What is the population in this study? Be careful: about what group do they want information?

answer: download photomath it's legit.

step-by-step explanation:

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺

4+4+2x

or

2x+8

step-by-step explanation:

most likely linear (proportionate)

step-by-step explanation:

as time increases heart rate increases