,j
,-d
I
I
7) Acertain
new
car depreciates
atarate
af
2t3
-270t-670
over the
fust 9
years
(t
in
years).
a)
Find
the
total
amount
by
which
it depreciates
in
the fust
4
years.
b)
Find
the average
value
of
the rate
of depreciation
between
the
2od and 5e
year.
,.:;t.
8) A
producer's
marginal
cost,
in
dollars,
is
given
by
C
'(x)
=
3x'
+
60x. What
is the
total cost
C(x)
of
producing 7 exttaunits,
if
4
tltdts
are curtenfly
being
produced?
