How do i express 3.87×10.3in standardform​

Rounding decimals is very similar to rounding other numbers. if the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change. for example, rounding 0.843 to the nearest tenth would give 0.8. , your welcome !

An average person in the united states throws away 4.5 × 10² g of trash per day. in 2013, there were about    3.2×1063.2×106 people in the u.s.

The only possible answer is .3 repeating making it larger than .33

The answer is d angle 4