Question 1192978
The difference between those two years is 132.1-68.4=63.7 units billions of dollars.
divide by 5 to get a slope or the average per year over the interval of 12.74
the formula uses point slope where y-y1=m(x-x1) m slope and (x1, y1) point
y-68.4=12.74x
y=12.74x+68.4
in 2020, x=10
y=127.4+68.4=$195.8 billion.