What is the inverse of the function f(x) = 1/4x - 12?

Ineed to know the answer to this algebra question.

The numbers on a football field indicate 10 yard increments. you walk around the perimeter of a football field between the pylons. you walk a distance of 30623 yards. find the area and perimeter of the indicated regions. write your answers as mixed numbers, if necessary. a. one end zone: perimeter: yd area: yd2 b. the playing field (not including end zones): perimeter: yd area: yd2 c. the playing field (including end zones): perimeter: yd area: yd2

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?