8 pounds. Because you'll need 4 pounds to make 10 apple pies, 6 pounds to make 15 apple pies, and 8 pounds to make 20 apple pies.
V(t) = 2t^2 - 3t - 3
for an acceleration a(t),
a(t) = d (v(t)) / d t
a(t) = 4t - 3
at t=2
a(2) = 8 - 3
a(2) = 5 feet/s^2
Igor might've been unhappy because he cheated to get a good grade/score.
Given :
Polynomial ,
.
To Find :
Integration of f(x) .
Solution :
We know , integration of
is :

( Here , is C is a constant )
Now ,

Therefore , the integration is
.
Hence , this is the required solution .
All you do is multiply 15 and 6 you get 90. then divide 90 by 9 and you get 10.