Eco A laptop computer is purchased for S3500. Each year, its value is 80% of its value the year before. After how many years will the laptop computer be worth
$1000 or less? (Use the calculator provided if necessary.)
Write the smallest possible whole number

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

I’m which figure is point g an orthocenter