First, an equation for the total number of days required to write her paper:
Total = 1493 words + (269 words/day)(x) = 3376 words.
Simplifying, (269 words/day)x = 3376 words - 1493 words
If you solve this linear equation, you'll find that x = 7. That means Amy can finish her paper in 7 days.
The points of inflection are where the second derivative changes sign. It is the point where the concavity change from upward to downward, or vice versa.
The first derivative is
4(x+3)³
The second derivative is
12(x+3)²
This expression never changes sign. The expression (x+3)⁴ is concave upward everywhere (except x=-3, where it is flat).
There are no points of inflection.
Answer:
21
Step-by-step explanation:63
Answer:0.45 or the third one from the top
Step-by-step explanation: