The answer is 89. it's really not that hard.juat follow the steps
15 times 10^8 is the answer
F(9)=-(9)2-20
= -38
I hope it helps!
If this is your graph then your answer is
41.41 if not ask again and put your graph or copy it then paste it in the comments
You can set it up as a proportion like so....
<u>9.6</u> = <u>9</u><u>
</u> 1 x<u>
</u><u>
</u>9.6x = 9
<u />x = 9/9.6
x = 0.9375 hrs