I would say option 3 hopefully im right!!
Answer:

Step-by-step explanation:
Find the expression to represent how much you would expect a cub to weigh
days after it's born as exponential growth function
where
is the initial panda's weight and
is the rate of growth.
A newborn red panda weighs 100 grams, then 
A healthy cub gains about 7% of its newborn weight per day, then

Hence,

(g+f) (3).
=16 hope this helps<3