The confidence interval would be

.
We use the formula

, where

, with p being the sample proportion and N being the sample size.
First we find the z-score associated with this level of confidence:
Convert 95% to a decimal: 95/100 = 0.95
Subtract from 1: 1-0.95 = 0.05
Divide by 2: 0.05/2 = 0.025
Subtract from 1: 1-0.025 = 0.975
Using a z-table (http://www.z-table.com) we see that this value is associated with a z-score of 1.96.
Since 578/720 said yes, this gives us p=0.80:

This gives us
Answer is 17.647 or if rounded 18
Answer:
2 and 96 (lowest and highest #s far from any other #s listed
The first one is 9k cause you’re multiplying it and the second one is -18 because you’re multiplying -2 and 9
Brainliest for the person above me, thank you very much.