I need the Maximum target group exposure

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Solve this problem! extra ! 3025/5.5 = a/90.75

Amayoral candidate would like to know her residents’ views on a tax on sugar drinks before the mayoral debates. she asks one thousand registered voters from both parties. these voters are an example of a census population convenience sample simple random sample