6)
The cost
ofproducing
x
items
(in
dollars)
is
given
as c(x):(l/4;x4
+12x3
+244.
a)
Find
the
average
rate
of change
of cost
between
x:l0
and
x:l5.
(nearest
cent)
b) Find
the
marginal
cost
at
x:I5.
7) A:B(
1+/n)
"
Gives
the value
of
B dollars,
compounded
n
times
a
year,
at an
interest
rute
of rYo (decimal),
over
t
years.
a) Find
the
value
of
$47,700
at
an
interest
rate
of 4.TYocompounded
monthly,
for
8
years.
(nearest
dollar)
b)
Find
the
value
of
the same
arnount
with
the
same
interest
rate
over
8
years
if
compounded
continuously. (nearest
dollar)
8)
What
annual percent
growth
rate
is
equivalent
to
a continuous
percent
growth
rate
of
6.2Yo?
(nearest
tenth
of
a
percent)
