
Here we go ~
The air plane descends 15 feels every 1.45 seconds, so it's unit rate is :

Now we have to calculate the descent in 3.5 minutes ~


So, the airplane descends 2172.41 feels in three and a half minutes ~
Answer:



<u>--------------------------</u>
<u>hope it helps...</u>
<u>have a great day!!</u>
<u></u>
Three groups of 2 get one sheet and one person get they own
Use A²+B² = C²
so you get sqrt 400 * 400 + 900 * 900
sqrt of 160000 + 810000
or sqrt of 970000
which is 984.9 feet