A motorist drives on a toll road to and from work each day and pays $ 4.25 in tolls one-way. a. Write a model for the cost C in $ for tolls in terms of the number of working days, x . b. The department of transportation offers a prepaid toll pass for $ 150 a month. How many working days are required for the motorist to save money by buying the pass?
A motorist drives on a toll road to and from work each day and pays $ 4.25 in tolls one-way. a. Write a model for the cost C in $ for tolls in terms of the number of working days, x . b. The department of transportation offers a prepaid toll pass for $ 150 a month. How many working days are required for the motorist to save money by buying the pass?
Solution Summary: The author explains how to calculate the cost of tolls in terms of the number of working days.
A motorist drives on a toll road to and from work each day and pays
$
4.25
in tolls one-way.
a. Write a model for the
cost
C
in
$
for tolls in terms of the number of working days,
x
.
b. The department of transportation offers a prepaid toll pass for
$
150
a month. How many working days are required for the motorist to save money by buying the pass?
Decide whether each limit exists. If a limit exists, estimate its
value.
11. (a) lim f(x)
x-3
f(x) ↑
4
3-
2+
(b) lim f(x)
x―0
-2
0
X
1234
Determine whether the lines
L₁ (t) = (-2,3, −1)t + (0,2,-3) and
L2 p(s) = (2, −3, 1)s + (-10, 17, -8)
intersect. If they do, find the point of intersection.
Convert the line given by the parametric equations y(t)
Enter the symmetric equations in alphabetic order.
(x(t)
= -4+6t
= 3-t
(z(t)
=
5-7t
to symmetric equations.
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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