QUIZ 8
Name
1. Reserved seating at a certain concert at the Gorge Amphitheater in George, Washington, cost
$71.90 in September 2008. If admission fees for concerts are expected to increse by 17% per
year, what is the expected price of a dave Matthews Band
EXAM 3
Math 105
April 30, 2013
Name
You must show all your work. Partial credit will be given.
1. For each of the following use the rules of logarithms to rewrite the expression as a single
logarithmic expression.
(a) 2 ln (x2 ) ln (3x4 )
(b) 3 ln (3y 2 )
EXAM 2
Math 105
March 14, 2013
Name
You must show all your work. Partial credit will be given.
1. Find the equation of the line that passes through the two points (1, 3) and (3, 5).
2. Consider the data in the table below. Does this data describe a functi
QUIZ 1
Name
1. Solve each of the following system of equations
2x - y=5
3x + 2y=4
y=0.25x+1
y=1.9x-2.1
y=2x+1.6
2. For the following matrix, state whether or not it is the desired nal form. If it is, nd
the solution to the system of equations which it r
QUIZ 2
Name
1. Solve the system of equations
2x - 3y=5
-4x + 6y=4
2. Write the system of equations given below as an augmented matrix, then reduce the matrix
to reduced form and write the solutin for the set of equations (if it exists).
z = -2
4x - 2y -
EXAM 1
Math 105
February 7, 2013
Name
You must show all your work. Partial credit will be given.
1. Solve each of the following systems of equations using any method you like. (9 pts each)
(a)
2x-3y=-2
2x+ 3y=14
(b)
15x+9y=-12
-5x-3y=4
-3x + 5y=4
(c)
6x
QUIZ 5
Name
1. Find the slope and y -intercept of the linear function f (x) = 3x + 1.
2. Find E (t) at t = 4, where E (t) is the quarterly earnings per share for an international tortilla
producer t quarters after December 1999. The values are given in th
QUIZ 6
Name
1. In 2013, the average retail price of a 2011 Toyota Land Cruiser 4-Wheel Drive was $46,650.
The average retail price of a 2007 Touyota Land Cruiser 4-Wheel Drive was $21,325. Find a
linear model for the value of a Toyota Land Cruiser in 2013
QUIZ 9
Name
1. A pack of cigarettes currently cost $5.85 each. The price of a pack of cigarettes is expected
to increase by 4% per year in the future. Find a mathematical model that describes the cost
of a pack of cigarettes t years in the future. Now pre
QUIZ 7
Name
1. Find the equation of the line passing through the points (1, 4) and (5, 2).
2. Determine the concavity, y -intercept, and vertex for the quadratic function f (x) = 12x2 +
24x + 45.
3. Decide whether to use a quadratic, cubic or quartic mode
QUIZ 4
Name
1. Graph the solution region for the following system.
3x+2y
x +3y
x
12
7
0
8
7
6
5
4
3
2
1
-5
-4
-3
-2
-1
1
-1
-2
-3
2
3
4
5
6
7
8
2. For each of the following matrices, state whether or not it is the desired nal form. If it is,
nd the soluti
QUIZ 2
Name
1. Graph the solution region for the following system. Find the corner points of this region.
3x+5y
2x +9y
x
15
18
0
8
7
6
5
4
3
2
1
-5
-4
-3
-2
-1
1
-1
-2
-3
2
3
4
5
6
7
8
2. Graph the solution region for the following system of equations. Is