An average person in the united states throws away 4.5 × 10–2 kg of trash per day. in 2013, there were about 3.2 × 10-6  people in the u. s.  about how many grams of trash were thrown away in the united states in 2013?  

Solution: We are given:

On an average, one person in United states throws away g/day

In 2013, the population in United states

So in 2013, g/day of trash was thrown away.

In 2013, the number of days = 365

Therefore, in 2013 the amount of trash thrown away is:

g

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