Answer:
1 true good statement can prove his friend wrong.
Step-by-step explanation:
Answer is 1.
Slope(m) = -2 hope this helps
From the 8th to the 13th there are five numbers, and the difference between the 8th and the 13th is 20-12.5=7.5, so the difference between two neighboring number is 7.5÷5=1.5
from the 13th and the 25th there are 12 numbers, so the total difference is 12*1.5=18
so the 25th term is 20+18=38

If you don't know the first derivative of
, but you do for
and
, you can derive the former via the quotient rule:


or if you know the derivative of
:


As for the second derivative, you can use the power/chain rules:

or if you don't know the derivative of
,


which is the same as the previous result since
