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14 is the answer bc u have to multiply 7x2 <3
Answer: i) f(-9)= 66
ii)
.
iii) ![f(-x)=x^2-2x+3](https://tex.z-dn.net/?f=f%28-x%29%3Dx%5E2-2x%2B3)
Step-by-step explanation:
The given function :
.
i) For f(-9) , the independent variable is x= -9.
Put x= -9 in given function , we get
![f(-9)=(-9)^2+2(-9)+3](https://tex.z-dn.net/?f=f%28-9%29%3D%28-9%29%5E2%2B2%28-9%29%2B3)
![=81-18+3=66](https://tex.z-dn.net/?f=%3D81-18%2B3%3D66)
Thus , f(-9)= 66
ii) For f(x+1) , the independent variable is x= x+1.
Replace x by x+1 in given function , we get
.
![[\because\ (a+b)^2=(a^2+b^2+2ab)]](https://tex.z-dn.net/?f=%5B%5Cbecause%5C%20%28a%2Bb%29%5E2%3D%28a%5E2%2Bb%5E2%2B2ab%29%5D)
![=x^2+1+2x+2x+5](https://tex.z-dn.net/?f=%3Dx%5E2%2B1%2B2x%2B2x%2B5)
![=x^2+4x+6](https://tex.z-dn.net/?f=%3Dx%5E2%2B4x%2B6)
Thus ,
.
iii)For f(-x) , the independent variable is x=-x.
Replace x by -x in given function , we get
.
[∵ (+)(-)=(-)]
Thus , ![f(-x)=x^2-2x+3](https://tex.z-dn.net/?f=f%28-x%29%3Dx%5E2-2x%2B3)
Answer:
213.41 mph.
Step-by-step explanation:
Multiply by 3600 ( seconds in an hour) and divide by 5280 (feet in a mile).
= 213.41 mph.
Answer:
I think f(0) = g(2) is the answer, I'm very sure.
Step-by-step explanation: