Question

An average person in the United States throws away 4.5 × 10–1 kg of trash per day. In 2013, there were about 3.2 × 10 6 

people in the U.S.  About how many kilograms of trash was thrown away in the United States in 2013?  5.3 × 10     kg

Answer 1

multiply 4.5 and 10-1kgget the answer and multiply it to the answer of 3.2 and 106 which you get by multiplying 3.2 and 10kg