Ivy randomly surveys students in her school to learn about mobile phone password use. Of 25 respondents, 14 use a password. Part A
Based on Ivy's data, how many of the 275 students in her school would be expected to use a password?

Part B
If Ivy conducted her survey of 25 students on a volunteer basis, are the results
representative of the school?
Why or why not?

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

a

step-by-step explanation:

jjddbdhid r

step-by-step explanation:

where is the question is there is a formula or is there not one

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.