F(x) = 4x - 9
let f(x) = y, this implies that x = f⁻¹(y)
y = 4x - 9 Let us solve for x.
4x - 9 = y
4x = y + 9
x = (y + 9)/4
Recall that x = f⁻¹(y),
x = (y + 9)/4
f⁻¹(y) = (y + 9)/4
That means that for f⁻¹(x)
f⁻¹(x) = (x + 9)/4
Hope this explains it.
Food that goes down the mouth goes into the trachea I’m pretty sure and goes down the esophagus to the stomach!
The true answer is
<span>one-half the height between the crest and the trough (check your physics lesson)</span>
