As you know, to get the inverse of any expression, we start off by switching the variables about and then solving for "y",

$\bf \stackrel{f(x)}{y}=\cfrac{1}{2}x+4\qquad \qquad \stackrel{inverse}{\underline{x}=\cfrac{1}{2}\underline{y}+4}\implies x-4=\cfrac{1}{2}y
\\\\\\
2x-8=\stackrel{f^{-1}(x)}{y}
\\\\\\
f^{-1}(4)=2(4)-8\implies f^{-1}(4)=0$

4 0

3 years ago

What is the solution to equation? <br><br> 4x+5=2x-3

Masteriza [31]

4x - 2x = - 3 - 5
2x = - 8
x = - 4

8 0

3 years ago

6,173,253 in expanded form

lesya [120]

Six million, one hundred seventy-three thousand, two hundred fifty three

8 0

3 years ago