Answer
$2013$: $\$1.53$ billion
$2014$: $\$2.22$ billion
Work Step by Step
Let $x$ be the revenue in year 2013 and $x(1+0.452)$ be the revenue in year 2014.
The sum is:
$$x+x(1+0.452)=3.75$$
$$x+1.452x=3.75$$
$$2.452x=3.75$$
$$x=\frac{3.75}{2.452}=1.53$$
$$x(1+0.452)=1.53(1+0.452)=2.22$$
Thus, the revenue in 2013 is $\$1.53$ billion and in year 2014 is $\$2.22$ billion.