Wood deposits recovered from an archaeological site contain 12% of the c-14 they originally contained. how long ago did the tree from which the wood was obtained die? (assume the half life of carbon-14 is 5,730 years. round your answer to the nearest whole number.) yr

It costs 4.25 for 1 pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to nearest cent

Sunday: 1 1 2 monday: 1 tuesday: 2 1 2 wednesday: 1 3 4 thursday: 2 friday: 1 1 2 saturday: 2 jenna is a swimmer and trains every day. the schedule shown outlines the number of hours she trains each day. what is the total number of hours that jenna trains during the week?

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals