What is the unit rate per bottle if a pack of 28 bottles of juice sells for $7?

$0.25 per bottle
$0.75 per bottle
$2.50 per bottle
$4.00 per bottle

Me with this one question, and i'll upvote the brainliest answer

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?