A spider spins a web in the following way: It starts at sea level. It moves up one
A spider spins a web in the following way: It starts at sea level. It moves up one inch in the first minute. It moves down two inches in the second minute. It moves up three inches in the third minute. It moves down four inches in the fourth minute. Assuming that the pattern continues, what will the spider’s elevation be after an hour has passed?