Answer:
i dont understand
Step-by-step explanation:
Answer:
I have no clue j need more free answer
Step-by-step explanation:
3x+2y+z=16 4x-y=-5 y+x=11
F(x) = 3x + 1
let f(x) = y
y = 3x + 1
y - 1 = 3x
3x = y - 1
x = (y - 1)/3
From y = f(x), x = f⁻¹(y)
<span>x = (y - 1)/3
</span>
f⁻¹(y) = (y - 1)/3
f⁻¹(7) = <span>(7 - 1)/3 = 6/3 = 2
</span>f⁻¹(7)<span> = 2</span>
When purchased for 6.19, after mark up +4.20 = $10.39
