Answer
a. $3.02\times10^{12}$
b. $3.19\times10^{8}$
c. $9467$ dollars per person.
Work Step by Step
a. A trillion can be written as $10^{12}$ and $3.02$ trillion can be expressed in scientific notation as $3.02\times10^{12}$
b. A million can be written as $10^{6}$ and $319=3.19\times10^2$ million can be expressed in scientific notation as $3.19\times10^{6+2}=3.19\times10^{8}$
c. Using division for the average per person, we have
$\frac{3.02\times10^{12}}{3.19\times10^{8}}=0.9467084639\times10^4\approx9467$ dollars per person.
