Ateacher expected 18 parents to show up for open house, but 25 attended. which represents the percent of error? show work!
(a) 20%
(b) 24%
(c) 25%
(d) 28%

Pls! does anybody know a shortcut for answering these types of questions in the future?

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

Write 37/22 as a decimal rounded to the nearest hundredth.