Answer:
5
Step-by-step explanation:
g(x)=3x+2
g(x)÷x=3x÷x+2
g=3+2
g=5
f(x)=4x-3
f(x)÷x=4x÷x-3
f=4-3
f=1
3x+2÷g=4x-3÷f
2÷g=x-3÷f
5÷g=x÷f
5÷5=x÷1
1=x
1×(5×1)
5
Answer is 8
Work Shown:
f(x) = sqrt(5*x + 4)
f(12) = sqrt(5*12 + 4) ... replace every x with 12
f(12) = sqrt(60 + 4)
f(12) = sqrt( 64 )
f(12) = 8
From my knowledge, I would use the vertical line test instead of the horizontal line test. The vertical line test checks if something is a function, and the horizontal line test checks if an inverse function exists. (Correct me if I'm wrong, I haven't used this in a while.)
If I use the vertical line test:
A would fail because it intersects the vertical line more than once.
B would fail because the ellipse would intersect the vertical line more than once.
I can't see C too clearly, but from what I can make out of it, it doesn't pass the vertical line test because there are 2(?) lines and it intersects the vertical line more than once.
D passes the vertical line test because the parabola only intersects the vertical line at one point.
Hope I helped :)
yes, because its is the same equation but the number is switched around