16 divided by 2.5 minus 3.2 multiplied by 0.043

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

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

50 points~ ! i have to turn this in tomarrow