Aproperty owner on a lake is given an aluminum dock for his property. unfortunately the dock is too large and heavy to move over land. instead the owner has this idea (which his family thinks is insane) to move the dock by water. the dock is 20 ft long, 3ft wide, and weighs 500 lbs. the owner decides to float the dock using 50 gallon plastic drums filled with air. (a) (6 points) how many 50 gallon drums are required to float the dock? (b) (4 points) how many would you recommend the home owner actually use and in what configuration? why?

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm