For an exponential function the y-intercept is the "initial value" (not the common ratio).

will always be 2. if that's what you need
note that

because anything to the power of zero equals 0 (mathematically it's deciding something by itself)
P = 60 meters
l = 4 meters
60 / 4 = 20 <-- Because retangles have 4 sides.
If l=4 then subtract 4 from 20
So w=16
Answer:
complete the pattern 1,2,4,8, 10 and 12 and 14
82 minutes. aka an hour and 22 minutes