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10
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Chapter
7-8
5
10
15
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Chapter
9
5
10
15
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Chapter
1-2
Chapter
3-4
Chapter
5-6
0
Team One
0
Team Three
0
Team Five
0
Team Two
0
Team Four
0
Team Six
5 POINTS
Are these equations Parallel,
Coincident, or do they intersect?
2x+3y=6
4x+6y=0
5 POINTS
PARALLEL
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10 POINTS
Sweet delight candies has a fixed
cost of \$300. Each lb of candy
produced costs \$1 and is sold for
\$2. What is the break even point?
10 POINTS
x + 300 = 2x
-x
-x
300 = x
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15 POINTS
Solve:
a + b + c + d = 20
a+b+c=0
c + d = 13
b – 2d = -5
15 POINTS
a = -28
b = 35
c = -7
d = 20
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20 POINTS
Analyze in Echelon Form:
103 0
012 0
000 1
000 0
20 POINTS
No Solution!
x + 3z = 0
y + 2z = 0
0=1
0=0
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25 POINTS
Solve:
x–y+z=8
2x + 3y – z = -2
3x -2y -9z = 9
25 POINTS
X=4
Y=-3
Z=1
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5 POINTS
Find the line of best fit:
1975 44,676
1980 143,756
1985 371,571
1990 578,930
1995 1,071,029
2000 1,998,034
2005 2,632,655
2009 3,240,000
5 POINTS
y = 96939.29x –
191879351.5
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10 POINTS
Find A x B:
A= [ 1 5 3 ] B= 2
-1
4
10 POINTS
9
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15 POINTS
Graph the Inequality:
X<3
15 POINTS
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20 POINTS
Graph:
2x + 3y > 6
20 POINTS
y > -2/3x + 2
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25 POINTS
Solve AB:
A
12
3
9
6
B
73
189
25 POINTS
12(73) + 3(189)
9(73) + 6(189)
1443
1791
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5 POINTS
What interest uses the formula
A=P ( 1 + r/n)nt
5 POINTS
Compound Interest
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10 POINTS
Find the simple interest owed
on \$8,537 at 10% for 8
months.
10 POINTS
8,537 x .10 x (8/12) =
\$569.13
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15 POINTS
Find the constraint:
P = 400a + 100b + 200c + 300d
a + b < 600
c + d < 400
a + c > 500
b + d > 300
15 POINTS
P a b c d s1 s2 s3 s4 RHS
S1
0 1 1 0 0 1
0
0
0
600
S2
0 0 0 1 1 0
1
0
0
400
S3
0 -1 0 -1 0 0
0
1
0 -500
S4
0 0 -1 0 -1 0
0
0
1 -300
P
0 400 100 200 0 0 0
0
R3,C2=>
R4,C3=>
R1,C4=>
R2,C6
0
P=150,000 a=100 b=300
c=400 d=0
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20 POINTS
Find the value of annuity
when \$200 is deposited each
month at 10% interest (
compounded monthly ) for 20
years.
20 POINTS
200 ( 1 + .1/12) ^240 -1
.1/12
\$151,873.77
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25 POINTS
Solve the constraint:
P = 2x + y + 3z
2x + 3y + 4z > 20
4x + 2y + 2z > 15
25 POINTS
P = 15/2
X = 5/8
Y = 25/4
Z=o
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5 POINTS
Find the value of the expression:
C(3,1)
5 POINTS
*one choice of three
3x1
3
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10 POINTS
How many different vertical
arrangements are possible for 10
flags if 2 are white, 3 are red, and
five are blue?
10 POINTS
10!
2!3!5!
= 2,520
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15 POINTS
Mark, Marcus, and Mike all have
separate birthdays. If listed all
the ways possible this could
occur, how many would there be?
Assume that there are 365 days in
a year.
15 POINTS
365 x
364
x
363
= 48, 228, 180
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20 POINTS
Describe a sample space for an
experiment of selecting one
family from the set of all possible
three-child families.
20 POINTS
(B,B,B)
(G,B,B)
(B,B,G)
(G,B,G)
(B,G,B)
(G,G,B)
(B,G,G)
(G,G,G)
8 Choices
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25 POINTS
Standard license plates in the
state of South Carolina consist of
three letters of the alphabet
followed by three digits. How
many will have all their distinct
digits?
25 POINTS
26
L
26
26
10
L
L
D
9
D
8
D
= 12, 654, 720
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5 POINTS
Tell what the variable is, and then
whether it is discrete or
continuous.
- Count the # of defective parts
produced by a certain machine in
an hour.
5 points
Variable = Defective Parts
- Discrete
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10 POINTS
Is this graph:
A) Bell-shaped
C) Skewed right
B) Uniform
D) Skewed left
10 POINTS
C
- There are more outcomes
clustered at one end while
fewer values on the right side
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15 POINTS
A set of 750 scores are
normally distributed. How
many scores would you
expect to find between 2
standard deviations above and
below the mean?
15 POINTS
.95 x 750 =
712.5 scores
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20 POINTS
Given a normal distribution
with a mean of 9 and standard
deviation of 2, find the z-score
for 13.
20 POINTS
13 – 9/2 =
2
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25 POINTS
Find the normalcdf between 30
and 52 with a mean of 40, and a
standard deviation of 2.
25 POINTS
30-40/5 = -2
52-40/5 = 2.4
normalcdf (-2,2.4) =
.96905
96.9%
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“Big Points”
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Question
What was the name of
the district Miss Raven
taught at before Basha
High School?