Answer:
Easiest and fastest way is to graph the equation in a graphing calc and determine where it crosses the x-axis.
Step-by-step explanation:
Answer:
Birds 
Gerbils 
Fish 
Hamsters 
Step-by-step explanation:
From the question we are told that:
Sales
Number of birds 
Number of gerbils 
Number of fish 
Number of hamsters
Generally the frequency for birds
is mathematically given b



Generally the frequency for Gerbils
is mathematically given b



Generally the frequency for fish
is mathematically given b



Generally the frequency for fish
is mathematically given b



Answer:
f inverse x = -x+4/5
Step-by-step explanation: