The millage rate is the amount of property tax per $1000 of the taxable value of a home. For a certain county the millage rate is 24 mil ( $24 in tax per $1000 of taxable value of the home). A city within the county also imposes a flat fee of $108 per home. a. Write a function representing the total amount of property tax T x in $ for a home with a taxable value of x thousand dollars. b. Write an equation for T − 1 x . c. What does the inverse function represent in the context of this problem? d. Evaluate T − 1 2988 and interpret its meaning in context
The millage rate is the amount of property tax per $1000 of the taxable value of a home. For a certain county the millage rate is 24 mil ( $24 in tax per $1000 of taxable value of the home). A city within the county also imposes a flat fee of $108 per home. a. Write a function representing the total amount of property tax T x in $ for a home with a taxable value of x thousand dollars. b. Write an equation for T − 1 x . c. What does the inverse function represent in the context of this problem? d. Evaluate T − 1 2988 and interpret its meaning in context
Solution Summary: The author explains the function representing the total amount of property tax for a home based on the taxable value of x thousand dollars.
The millage rate is the amount of property tax per
$1000
of the taxable value of a home. For a certain county the millage rate is 24 mil (
$24
in tax per
$1000
of taxable value of the home). A city within the county also imposes a flat fee of
$108
per home.
a. Write a function representing the total amount of property tax
T
x
in $
for a home with a taxable value of x thousand dollars.
b. Write an equation for
T
−
1
x
.
c. What does the inverse function represent in the context of this problem?
d. Evaluate
T
−
1
2988
and interpret its meaning in context
1. Show that the vector field
F(x, y, z)
=
(2x sin ye³)ix² cos yj + (3xe³ +5)k
satisfies the necessary conditions for a conservative vector field, and find a potential function for
F.
1. Newton's Law of Gravitation (an example of an inverse square law) states that the magnitude
of the gravitational force between two objects with masses m and M is
|F|
mMG
|r|2
where r is the distance between the objects, and G is the gravitational constant. Assume that the
object with mass M is located at the origin in R³. Then, the gravitational force field acting on
the object at the point r = (x, y, z) is given by
F(x, y, z) =
mMG
r3
r.
mMG
mMG
Show that the scalar vector field f(x, y, z) =
=
is a potential function for
r
√√x² + y² .
Fi.e. show that F = Vf.
Remark: f is the negative of the physical potential energy, because F = -V(-ƒ).
2. Suppose f(x) = 3x² - 5x. Show all your work for the problems below.
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