Can someone please help me on B
1 answer:
Nice work on getting part (a) correct.
To complete part (b), we plug x = 8 into the derivative calculated for part (a)
47 goes in the box
------------------
As for the multiple choice section, you have chosen the correct answer. It is choice C.
f ' (8) = 47 can be interpreted as "at exactly 8 words, the memorization time is increasing by exactly 47 seconds per word".
Phrased another way, it's taking 47 seconds longer to memorize another word at exactly the x = 8 word marker.
You might be interested in
Answer:
C
Step-by-step explanation:
Calculate the distance using the distance formula
d = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = E(- 2, 2) and (x₂, y₂ ) = F(4, - 6)
EF =
=
=
= = 10 → C