Find the area under the curve $y=2x^{−3}$ from $x=9$ to $x=t$ and evaluate it for $t=10$, $t=100$. Then find the total area under this curve for $x \geq 9$.
I found the first two answers, but I am having trouble with the third one. For $t=10$, area = $0.00234568$; for $t=100$, area = $0.0122476$. But how do I find the total area?