Certain radioactive material decays in such a way that the mass remaining after t t
years is given by the function
m(t)=285e−0.01t
m
(
t
)
=
285
e
−
0.01
t
where m(t)
m
(
t
)
is measured in grams.

(a) Find the mass at time t=0
t
=
0
.