I believe it’s correct, but i’m not smart
Answer:
5
Step-by-step explanation:
f(x)=3x-1
f(2)=3×2-1
f(2)=6-1
f(2)=5
Answer:
1. A sound wave in air has a frequency of 262 Hz and travels at a speed of 330 m/s.
2. Sound has a speed of 340 m/s in air at room temperature.
3. A wave has a frequency of 500 Hz and a wavelength of
4. The speed of light is 3.0x10^8 m/s, calculate for the frequency.
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The slope or distance is 4/-3
and h(x)= 2x-8
g o h is a composition function
First we find g o h
g o h is g(h(x))
We plug in h(x) in g(x)
We replace x with 2x-8 in g(x)
![g(h(x)) = g (2x-8) = \sqrt{2x-8-4} = \sqrt{2x-12}](https://tex.z-dn.net/?f=g%28h%28x%29%29%20%3D%20g%20%282x-8%29%20%3D%20%5Csqrt%7B2x-8-4%7D%20%3D%20%5Csqrt%7B2x-12%7D)
![g(h(x)) = \sqrt{2x-12}](https://tex.z-dn.net/?f=g%28h%28x%29%29%20%3D%20%5Csqrt%7B2x-12%7D)
To find domain we look at the domain of h(x) first
Domain of h(x) is set of all real numbers
now we look at the domain of g(h(x))
Negative number inside the square root is imaginary. so we ignore negative number inside the square root
So to find domain we set 2x - 12 >=0 and solve for x
2x - 12 >=0
add both sides by 12
2x >= 12
divide both sides by 2
x > = 6