What is the value of x in the triangle below

Find the value of the variable and the length of each secant segment

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.