Modeling for Business — Test Answers

71 verified answers8 views
21
Free Preview

A hardware store purchases a drill for $⁢80 and marks it up by 60% They then offer a 20% discount on the marked-up price. The store manager calculates the final sale price as $⁢64 The manager's steps are shown below: Calculate the marked-up price: $⁢80+($⁢80⋅0.60)=$⁢128 Apply the discount: $⁢128−($⁢128⋅0.50)=$⁢64 Identify the mistake in the manager's calculation.

A
The manager used the wrong initial price.
B
The manager applied a 50 percent markup instead of a 60 percent markup.
C
The manager applied the discount to the original price instead of the marked-up price.
D
The manager applied a 50 percent discount instead of a 20 percent discount.
22
Free Preview

Given the profit function P⁡(x)=−2⁢x^2+8⁢x−3 , graph the function and identify the graph that correctly represents the profit based on the number of units sold. The vertex indicates the maximum profit.

A
Image with description A coordinate plane with a parabola. The x-axis is labeled negative 1 to 5. The y-axis is labeled negative 15 to 15. Points on the parabola are at (0.5, 0), (2, 5), (5, negative 13).
B
Image with description A coordinate plane with a parabola. The x-axis is labeled negative 1 to 5. The y-axis is labeled negative 15 to 15. Points on the parabola are at (0, 3), (2, 11), (5, negative 12).
C
Image with description A coordinate plane with a parabola. The x-axis is labeled negative 1 to 5. The y-axis is labeled negative 15 to 15. Points on the parabola are at (0.5, 0), (2, negative 5), (5, 13).
D
Image with description A coordinate plane with a parabola. The x-axis is labeled negative 1 to 5. The y-axis is labeled negative 100 to 20. Points on the parabola are at (3, negative 40), (2, negative 20), (4, negative 60).
24

If the government sets a price ceiling of $⁢2 , what is the likely outcome in the smartphone market?

A
no effect on the market
B
smartphone shortage
C
market equilibrium
D
smartphone surplus
25

How does the increase in production capacity (shift in supply) affect the equilibrium quantity?

A
The equilibrium quantity remains unchanged.
B
The equilibrium quantity fluctuates unpredictably.
C
The equilibrium quantity decreases.
D
The equilibrium quantity increases.
26

With the addition of a $⁢0.50 per print job expense for binding materials, what is the updated equation to model the total monthly expenses E⁡(q) for the printshop?

A
cap e times q is equal to 2 point 2 5 q plus 3 comma 700
B
cap e times q is equal to 2 point 7 5 q plus 3 comma 700
C
cap e times q is equal to 2 point 7 5 q plus 3 comma 500
D
cap e times q is equal to 2 point 7 5 q plus 3 comma 800
27

Which research question would help in understanding the impact of marketing campaigns on the consumer ratings of the wearable fitness tracker?

A
What marketing channels does the company use to promote its wearable fitness tracker?
B
How much does the company spend on each marketing campaign?
C
What is the impact of marketing campaigns on the average consumer ratings of the company's wearable fitness tracker?
D
How many marketing campaigns has the company launched this year?
28

What is the domain of the graphed function?

A
left bracket negative 1 comma 3 right bracket
B
(−∞,∞)
C
left bracket 0 comma 3 right bracket
D
left bracket 0 comma 4 right bracket
29

How many units must the store sell to break even?

A
2 comma 000 or 6 comma 000 units
B
2 comma 000 or 4 comma 000 units
C
0 or 4 comma 000 units
D
0 or 6 comma 000 units
30

If the government sets a price ceiling of $3 in the laptop market after the demand has shifted left due to the rising popularity of tablets, what is the likely impact on the laptop market?

A
There will be no effect on the market
B
There will be a laptop surplus.
C
There will be a laptop shortage.
D
The laptop supply will increase to meet demand.
31

With the addition of a $⁢0.50 per print job expense for binding materials, what is the updated equation to model the total monthly expenses E⁡(q) for the printshop?

A
cap e times q is equal to 2 point 7 5 q plus 3 comma 500
B
cap e times q is equal to 2 point 7 5 q plus 3 comma 700
C
cap e times q is equal to 2 point 2 5 q plus 3 comma 700
D
cap e times q is equal to 2 point 7 5 q plus 3 comma 800
32

A portfolio manager wants to distribute $⁢60,000 between two investments. The risk function is R⁡(x)=0.029⁢x^2−0.018⁢x+0.009 . If x is the portion invested in the first option, how should the manager distribute the funds to minimize risk? Round your answer to the nearest thousandth if necessary.

A
First option: 0 point 3 1 0 Second option: 0 point 6 9
B
First option: 0 point 6 9 Second option: 0 point 3 1 0
C
First option: 0 point 1 9 Second option: 0 point 8 1
D
First option: 0 point 8 1 Second option: 0 point 1 9
34

A coffee shop has fixed monthly expenses of $⁢2,000 and a variable cost of $⁢2 per cup of coffee sold. The revenue is $⁢0 when 0 cups are sold and $⁢0 when 400 cups are sold due to capacity limits. The maximum revenue occurs when 200 cups are sold. Which system of equations represents the linear cost function C⁡(x) and the quadratic revenue function R⁡(x) , where x represents the number of cups of coffee sold?

A
cap c times x is equal to 2 x plus 2 comma 000 cap r times x is equal to negative x times open paren x minus 200 close paren
B
cap c times x is equal to 2 comma 000 x plus 2 cap r times x is equal to negative x times open paren x minus 200 close paren
C
cap c times x is equal to 2 x plus 2 comma 000 cap r times x is equal to negative x times open paren x minus 400 close paren
D
cap c times x is equal to 2 comma 000 x plus 2 cap r times x is equal to negative x times open paren x minus 400 close paren
35

A hardware store purchases a drill for $⁢80 and marks it up by 60% They then offer a 20% discount on the marked-up price. The store manager calculates the final sale price as $⁢64 The manager's steps are shown below: Calculate the marked-up price: $⁢80+($⁢80⋅0.60)=$⁢128 Apply the discount: $⁢128−($⁢128⋅0.50)=$⁢64 Identify the mistake in the manager's calculation.

A
The manager applied a 50 percent markup instead of a 60 percent markup.
B
The manager used the wrong initial price.
C
The manager applied the discount to the original price instead of the marked-up price.
D
The manager applied a 50 percent discount instead of a 20 percent discount.
39

A portfolio manager wants to distribute $⁢60,000 between two investments. The risk function is R⁡(x)=0.029⁢x^2−0.018⁢x+0.009 . If x is the portion invested in the first option, how should the manager distribute the funds to minimize risk? Round your answer to the nearest thousandth if necessary.

A
First option: 0 point 1 9 Second option: 0 point 8 1
B
First option: 0 point 3 1 0 Second option: 0 point 6 9
C
First option: 0 point 8 1 Second option: 0 point 1 9
D
First option: 0 point 6 9 Second option: 0 point 3 1 0

Did you find these answers helpful?

Modeling for Business — Test Answers…