Answer:
The original value of the comic book is 
Step-by-step explanation:
we have

we know that
The original value of the comic book is equal to the value of the function for t=0
so
substitute the value of t=0 in the function


Answer:
14 min
Step-by-step explanation:
Dividing 840 seconds by (60 sec / 1 min) results in 14 minutes.
( (60 sec / 1 min) is a conversion factor, sec to min or min to sec.)
Angle A is 165°, Angle B is 15°
Answer:
x=2
Step-by-step explanation:
Again, trial and error.
Answer:
Step-by-step explanation:
![x^4+4x^3-27x-108\\=x^3(x+4)-27(x+4)\\=(x+4)(x^3-27)\\=(x+4)[x^3-3^3]\\=(x+4)(x-3)(x^2+3x+3)](https://tex.z-dn.net/?f=x%5E4%2B4x%5E3-27x-108%5C%5C%3Dx%5E3%28x%2B4%29-27%28x%2B4%29%5C%5C%3D%28x%2B4%29%28x%5E3-27%29%5C%5C%3D%28x%2B4%29%5Bx%5E3-3%5E3%5D%5C%5C%3D%28x%2B4%29%28x-3%29%28x%5E2%2B3x%2B3%29)