Based on the sample results, about what percent of the population prefers reading a hard copy?

D, i am not sure if it is 100% correct, but most likely.

84%

Step-by-step explanation:

Basically, you need to think about proportions. Since the total in this scenario is 25 and 21/25 people prefer hard copies, you need to figure out how to get that fraction to a fraction over 100.

The easiest way to do this is to multiply both numbers by 4. The value of the fraction stays the same, but what you're doing is basically reverse simplifying.

Now after multiplying by 4, you get 84/100, which is 84%! :)

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

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step-by-step explanation:

tyty jry j y yj yttj yhgtyj y ghyj ytthj