Suppose that an air freshener starts with 40 grams and slowly evaporates. Answer the questions below.

(a) Suppose it loses weight at a constant rate of 2 grams per day. Find a formula for the amount remaining f(t)f(t) at time tt, in days.------

A. f(t)=40+2tf(t)=40+2t

B. f(t)=402tf(t)=402t

C. f(t)=40(0.98t)f(t)=40(0.98t)

D. f(t)=40(1.02t)f(t)=40(1.02t)

Using the formula you just found, how much remains after 3 days? Enter a number only, rounded to 1 decimal if needed: --------

(b) Suppose instead that it loses weight at a rate of 2% per day. Find a formula for the amount remaining f(t)f(t) at time tt, in days.------

A. f(t)=40+2tf(t)=40+2t

B. f(t)=402tf(t)=402t

C. f(t)=40(0.98t)f(t)=40(0.98t)

D. f(t)=40(1.02t)f(t)=40(1.02t)

Using the formula you just found, how much remains after 3 days? Enter a number only, rounded to 1 decimal if needed:--------