COB 291 Final Exam Review questions
well answered graded A+
A linear program (LP) can be both unbounded and have alternate optimal solutions.
True
False - correct answer ✔✔False
In order to get alternate (more than one) optimal solutions, at least one of the constraint lines
needs to be a parallel to the objective function.
True
False - correct answer ✔✔True
Sometimes redundant constraints may define the feasible region.
True
False - correct answer ✔✔False
The equation of Y-axis is Y=0.
True
False - correct answer ✔✔False
The lines 7x-14y=42 and 3x-6y=48 do not intersect each other.
True
False - correct answer ✔✔True
The line for 2x-3y=0 passes through the point (2,3).
, True
False - correct answer ✔✔False
All of the following are benefits of modeling except:
a) Modeling delivers needed information on a timely basis
b) Modeling is less expensive than implementing several alternative solutions.
c) Modeling finds the right answers to incorrect or flawed problem statements.
d) Modeling is helpful in examining things that would be impossible to do in reality. - correct
answer ✔✔c) Modeling finds the right answers to incorrect or flawed problem statements.
A whole seller packs vests in a pack of 4 and sells the pack at a price of $6. The yearly fixed cost
is $2500. The whole seller buys a vest from a vest maker at a price of $1 per vest. Assume the
whole seller can sell all vests that are bought. How many packs of vests the whole seller should
sell to make a $1000 profit in a year?
a) 200
b) 500
c) 100
d) 1250
e) 1750 - correct answer ✔✔e) 1750
Profit Equation - correct answer ✔✔P(x) = R(x) - C(x)
Target Profit= Rev-Cost
Target Profit= (Rev per unit-Cost per unit) - Fixed cost
Solve for X
An advertising agency places two types of advertisements. They need to figure out the number
of internet ads (I) and the number of TV ads (T) to place. If they need to place at least 10 TV ads
and 15 internet ads, the constraint(s) should be:
well answered graded A+
A linear program (LP) can be both unbounded and have alternate optimal solutions.
True
False - correct answer ✔✔False
In order to get alternate (more than one) optimal solutions, at least one of the constraint lines
needs to be a parallel to the objective function.
True
False - correct answer ✔✔True
Sometimes redundant constraints may define the feasible region.
True
False - correct answer ✔✔False
The equation of Y-axis is Y=0.
True
False - correct answer ✔✔False
The lines 7x-14y=42 and 3x-6y=48 do not intersect each other.
True
False - correct answer ✔✔True
The line for 2x-3y=0 passes through the point (2,3).
, True
False - correct answer ✔✔False
All of the following are benefits of modeling except:
a) Modeling delivers needed information on a timely basis
b) Modeling is less expensive than implementing several alternative solutions.
c) Modeling finds the right answers to incorrect or flawed problem statements.
d) Modeling is helpful in examining things that would be impossible to do in reality. - correct
answer ✔✔c) Modeling finds the right answers to incorrect or flawed problem statements.
A whole seller packs vests in a pack of 4 and sells the pack at a price of $6. The yearly fixed cost
is $2500. The whole seller buys a vest from a vest maker at a price of $1 per vest. Assume the
whole seller can sell all vests that are bought. How many packs of vests the whole seller should
sell to make a $1000 profit in a year?
a) 200
b) 500
c) 100
d) 1250
e) 1750 - correct answer ✔✔e) 1750
Profit Equation - correct answer ✔✔P(x) = R(x) - C(x)
Target Profit= Rev-Cost
Target Profit= (Rev per unit-Cost per unit) - Fixed cost
Solve for X
An advertising agency places two types of advertisements. They need to figure out the number
of internet ads (I) and the number of TV ads (T) to place. If they need to place at least 10 TV ads
and 15 internet ads, the constraint(s) should be:
