Which function has an inverse that is also a function?
g(x) = 2x – 3
k(x) = –9x2
f(x) = |x + 2|
w(x) = –20

the answer is two. hope this !

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is

i suppose it should be (y=2x-5)

step-by-step explanation:

answer:

24pi or letter c