Answer:
The corresponding definite integral may be written as

The answer of the above definite integral is

Step-by-step explanation:
The given limit interval is

![[a, b] = [-8, 6]](https://tex.z-dn.net/?f=%5Ba%2C%20b%5D%20%3D%20%20%5B-8%2C%206%5D)
The corresponding definite integral may be written as


Bonus:
The definite integral may be solved as

Therefore, the answer to the integral is

Answer:
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Step-by-step explanation:
Answer:
C
Step-by-step explanation:
Finding the z-score:
z = (x - μ) / σ
z = (66 - 57) / 9
z = 1
Using a z-score table or calculator:
P(z < 1) = 0.8413
84.13% of 4000 is:
0.8413 (4000) = 3365.2
Rounding up to the nearest whole number, approximately 3366 students will score less than 66. Answer C.