If f(x) = 7 x +12, what is f-1(x) (the inverse function)?  Select the correct option: A) (x-12)/7 B) (x-12)/6 C) (x-12)/5 D) (x-12)/4 E) (x-12)/3
f(x) = 7 x + 12   take both side f-1(x)   f(f-1(x))= 7 f-1(x) + 12   x= 7(f-1(x)) +12   f-1(x) = (x-12)/7   (x-12)/7NSWER:(x-12)/7
<result>A</result>
If f(x) = 7 x +12, what is f-1(x) (the inverse function)?