(d) Jim walks three miles in 45 minutes. How long does it take for him to walk 5 miles?

Witch represents the inverse of the function f(x)=1/4x-12

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Write the equation in logarithmic form e^x=403.429