For Exercises 87-90 , use the Tangent feature from the DRAW menu to find the rate of change in part (b). Depreciation. Pelican Fabrics purchases a new video surveillance system. The value of the system is modeled by V ( t ) = 17 , 500 ( 0.92 ) t , where V is the value of the system, in dollars, t years after its purchase. a. Use the model to estimate the value of the system 5 yr after it was purchased. b. What is the rate of change in the value of the system at the end of 5 yr? c. When will the system be worth half of its original value?
For Exercises 87-90 , use the Tangent feature from the DRAW menu to find the rate of change in part (b). Depreciation. Pelican Fabrics purchases a new video surveillance system. The value of the system is modeled by V ( t ) = 17 , 500 ( 0.92 ) t , where V is the value of the system, in dollars, t years after its purchase. a. Use the model to estimate the value of the system 5 yr after it was purchased. b. What is the rate of change in the value of the system at the end of 5 yr? c. When will the system be worth half of its original value?
Solution Summary: The author explains how the value of the system after 5yr can be determined using Ti-84 graphic calculator.
1. A bicyclist is riding their bike along the Chicago Lakefront Trail. The velocity (in
feet per second) of the bicyclist is recorded below. Use (a) Simpson's Rule, and (b)
the Trapezoidal Rule to estimate the total distance the bicyclist traveled during the
8-second period.
t
0 2
4 6 8
V
10 15
12 10 16
2. Find the midpoint rule approximation for
(a) n = 4
+5
x²dx using n subintervals.
1° 2
(b) n = 8
36
32
28
36
32
28
24
24
20
20
16
16
12
8-
4
1
2
3
4
5
6
12
8
4
1
2
3
4
5
6
=
5 37
A 4 8 0.5
06
9
Consider the following system of equations, Ax=b :
x+2y+3z - w = 2
2x4z2w = 3
-x+6y+17z7w = 0
-9x-2y+13z7w = -14
a. Find the solution to the system. Write it as a parametric equation. You can use a
computer to do the row reduction.
b. What is a geometric description of the solution? Explain how you know.
c. Write the solution in vector form?
d. What is the solution to the homogeneous system, Ax=0?
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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