A vendor at a carnival sells cotton candy and caramel apples for $ 2.00 each. The vendor is charged $ 100 to set up his booth. Furthermore, the vendor's average cost for each product he produces is approximately $ 0.75 . a. Write a linear cost function representing the cost C x in $ to the vendor to produce x products. b. Write a linear revenue function representing the revenue R x in $ for selling x products. c. Determine the number of products to be produced and sold for the vendor to break even. d. If 60 products are sold, will the vendor make money or lose money?
A vendor at a carnival sells cotton candy and caramel apples for $ 2.00 each. The vendor is charged $ 100 to set up his booth. Furthermore, the vendor's average cost for each product he produces is approximately $ 0.75 . a. Write a linear cost function representing the cost C x in $ to the vendor to produce x products. b. Write a linear revenue function representing the revenue R x in $ for selling x products. c. Determine the number of products to be produced and sold for the vendor to break even. d. If 60 products are sold, will the vendor make money or lose money?
A vendor at a carnival sells cotton candy and caramel apples for
$
2.00
each. The vendor is charged
$
100
to set up his booth. Furthermore, the vendor's average cost for each product he produces is approximately
$
0.75
.
a. Write a linear cost function representing the cost
C
x
in $
to the vendor to produce
x
products.
b. Write a linear revenue function representing the revenue
R
x
in $
for selling
x
products.
c. Determine the number of products to be produced and sold for the vendor to break even.
d. If
60
products are sold, will the vendor make money or lose money?
(b) Find the (instantaneous) rate of change of y at x = 5.
In the previous part, we found the average rate of change for several intervals of decreasing size starting at x = 5. The instantaneous rate of
change of fat x = 5 is the limit of the average rate of change over the interval [x, x + h] as h approaches 0. This is given by the derivative in the
following limit.
lim
h→0
-
f(x + h) − f(x)
h
The first step to find this limit is to compute f(x + h). Recall that this means replacing the input variable x with the expression x + h in the rule
defining f.
f(x + h) = (x + h)² - 5(x+ h)
=
2xh+h2_
x² + 2xh + h² 5✔
-
5
)x - 5h
Step 4
-
The second step for finding the derivative of fat x is to find the difference f(x + h) − f(x).
-
f(x + h) f(x) =
= (x²
x² + 2xh + h² -
])-
=
2x
+ h² - 5h
])x-5h) - (x² - 5x)
=
]) (2x + h - 5)
Macbook Pro
Evaluate the integral using integration by parts.
Sx² cos
(9x) dx
Let f be defined as follows.
y = f(x) = x² - 5x
(a) Find the average rate of change of y with respect to x in the following intervals.
from x = 4 to x = 5
from x = 4 to x = 4.5
from x = 4 to x = 4.1
(b) Find the (instantaneous) rate of change of y at x = 4.
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