Kate, elizabeth and siobhan volunteer at the hospital. in a week, katie volunteers 3 hours more than elizabeth does and siobhan volunteers 1 hour less than elizabeth. over 3 weeks, the number of hours katies volunteers is equal to the sum of elizabeth's and siobhans volunteer hours in 3 weeks. each week, each person works the same number of hours as they did week one complete the table to find out how many hours each person volunteers each week.

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

Rewrite so the subject can be y in the formula d=m-y/y+n