Answer:
$1.4 B per year
Step-by-step explanation:

First, solve the parentheses:

Next, the exponential terms

Solve the multiplication:

Add and subtract:
Answer: The answer is C
Step-by-step explanation: 15 - 2 = 13 13+5=18
Hope this helps :)
Four as zeros don't count when you're figuring out significant figures
Peter, to find the perimeter you have to add all sides up.