88. Dropping an Object. The formula d t= 4 can be used to estimate the time , t, in seconds it takes for an object dropped to travel d feet. a. Estimate how long it will take an object to drop 100 ft. (2 pts.) b. Estimate how long it will take an object to drop 400 ft. (2 pts.) c. Estimate how long it will take an object to drop 900 ft. (2 pts.) 62. Use the distributive property to multiply. Then, if possible, simplify the resulting expression. ( 4 pts.) -3 (2 - 88. 3 ) United Kingdom Debt per Person In 2010, the United Kingdom's government had a debt of about 923 billion (the pound, symbolized , is the United Kingdom's unit of currency.) The United Kingdom's population in 2010 was about 62.8 million. a) Determine the amount of debt per person in 2010 for the United Kingdom. (2 pts.) b) In 2010, 1 was worth about $1.50. Convert the amount found in part a) to dollars. (2 pts.) 100. Bucket Full of Molecules. A drop of water contains about 40 billion molecules. If a bucket has half a million drops of water in it, how many molecules of water are in the bucket? Write your answer in scientific notation. (2 pts.)