A recent poll found that 76% of a random sample of 100 American movie-goers thought the popcorn sold at the movie theatre was overpriced Do you think that the percentage of all American movie-goers we think the popcorn is overpriced is equal to 70%? Explain

Yes, roughly 70%

Step-by-step explanation:

I would say that the percentage of all American movie-goers that think this would be around the 70% mark. This is based on the recent poll findings. That is because the poll inquiry was done on 100 randomly selected American movie-goers. Therefore, since it is a random selection from the same population then that makes it directly proportional to the overall population, this is assuming that the overall population is the same (American movie-goers)

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0