(20 points)
Alex, Alicia and Juan fill orders in a fast-food restaurant. Alex incorrectly fills 20% of the orders he takes.
Alicia incorrectly fills 12% of the orders she takes, and Juan incorrectly fills 5% of the orders he takes. Alex fills
of all order

Max: 25A + 15F
1500 = 25A + 15F
A = (500 - 15F)/25
A= # of A/C units
F= # of fans
S.T.
3A + 2F <= 240
2A + F <= 140
A, F >= 0
A >= 20
F <= 80
Slack in amount of fans.
Max is 80 and optimal is 60.
A = (240-2F)/3
A = (140-F)/2
Fans
Wiring
0
80
10 73.33333
2

a.
Intercept: b0 = -240. Estimates how many sodas will be sold at 0 degrees. This means that -240 sodas
Slope: b1 = 8. This means that for every one degree increase will result in selling 8 more sodas.
b.
y^ = -240 + 8(80)
y^ =
400
c.
0 = -240 + 8x
240 =

The following table contains the ACT scores and the GPA (grade point average) for 8 college students.
Grade point average is based on a four-point scale and has been rounded to one digit.
Student
1
2
3
4
5
6
7
8
a.
b.
c.
d.
ACT
21
24
26
27
29
25
25
30
GPA

Max: 25A + 15F
1500 = 25A + 15F
A = (500 - 15F)/25
A= # of A/C units
F= # of fans
S.T.
3A + 2F <= 240
2A + F <= 140
A, F >= 0
A >= 20
F <= 80
Slack in amount of fans.
Max is 80 and optimal is 60.
A = (240-2F)/3
A = (140-F)/2
Fans
Wiring
0
80
10 73.33333
2

Page 18 - #14
Total Revenue = 20 shirts * $15 each = $300 Total Revenue
Variable Cost = $8 for materials * 20 shirts = $160 Variable Cost
Will need to sell 34 shirts to break even. Total revenue is $510.
Page 18 - #15
Ray must sell 5 to break even.
Page 1

In "Do Students Go to Class? Should They?" David Romer offers a very specific policy conclusion based on his re
conclusion? What difficulty with the nature of attendance does he identify in making this conclusion a reality?
In linear programming, what is