For the function f(x) = x2 ­ -12, find (f o f­-1)(4)

Remember that a function composed with its inverse results in the placeholder
aka
(f o f⁻¹)(x)=x

so
(f o f⁻¹)(4)=4

The distance from point a to point c across the coordinate plane is aproxamatly 8.94 rounded to the nearest hundredth. you use a^2 + b^2 =c^2