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?

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.

answer: i wpould go with c

step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4