Hannah water bottle had 7/8 and drank 5/8 what fractions shows what's left

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655