Marginal Profit and Times Rate of Change When a company produces and sells x thousands units per week, its total weekly profit is P thousand dollars, where P = 200 x 100 + x 2 . The production level at t weeks from the present is x = 4 + 2 t . Find the marginal profit, d P d x . Find the time rate of change of profit, d P d t . How fast (with respect to time) are profit changing when t = 8 ?
Marginal Profit and Times Rate of Change When a company produces and sells x thousands units per week, its total weekly profit is P thousand dollars, where P = 200 x 100 + x 2 . The production level at t weeks from the present is x = 4 + 2 t . Find the marginal profit, d P d x . Find the time rate of change of profit, d P d t . How fast (with respect to time) are profit changing when t = 8 ?
Solution Summary: The author explains the marginal profit function for P(x)=200x
Marginal Profit and Times Rate of Change When a company produces and sells
x
thousands units per week, its total weekly profit is
P
thousand dollars, where
P
=
200
x
100
+
x
2
.
The production level at
t
weeks from the present is
x
=
4
+
2
t
.
Find the marginal profit,
d
P
d
x
.
Find the time rate of change of profit,
d
P
d
t
.
How fast (with respect to time) are profit changing when
t
=
8
?
16. Solve each of the following equations for x.
(a) 42x+1 = 64
(b) 27-3815
(c) 92. 27² = 3-1
(d) log x + log(x - 21) = 2
(e) 3 = 14
(f) 2x+1 = 51-2x
11. Find the composition fog and gof for the following functions.
2
(a) f(x) = 2x+5, g(x) = x²
2
(b) f(x) = x²+x, g(x) = √√x
1
(c) f(x) = -1/2)
9
9(x) =
х
=
-
X
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