Answer is 4 (One)
There should be so many apostrophes or quotation marks in a row .
Simply a glare screen, because it clearly states what it protects one against, I guess.
$4 x number of visits (V)> price of membership (M)
V > M/4
In order to go about this situation, you would need to keep the stripped screw and find a larger or smaller screw driver head OR use a flat head screwdriver to see if it will catch some part of the stripped screw.
I hope this is the answer you were looking for and that it helps!! :)