Suppose that the demand and price for a certain model of a youth wristwatch are related by the following equation p=D(q) = 16-1.25q where p is the price (in dollars) and q is the quantity demanded (in hundreds). Find the price at each level of demand. Answer parts a through d. a. Find the price when the demand is 0 watches. The price when the demand is 0 watches is $ b. Find the price when the demand is 800 watches. The price when the demand is 800 watches is $ c. Find the quantity demanded for the watch when the price is $11. At a price of $11, the demand is for watches. d. Graph p = 16-1.25q. Choose the correct graph below. O A. Ap 35- 0- Q O B. Ap 35- 0- O C. Ap 35- 0- Q O D. Ap 35- 1. 0- Q

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Suppose that the demand and price for a certain model of a youth wristwatch are related by the following equation:

\[ p = D(q) = 16 - 1.25q \]

where \( p \) is the price (in dollars) and \( q \) is the quantity demanded (in hundreds). Find the price at each level of demand. Answer parts a through d.

**a. Find the price when the demand is 0 watches.**

The price when the demand is 0 watches is $[ \ ]

**b. Find the price when the demand is 800 watches.**

The price when the demand is 800 watches is $[ \ ]

**c. Find the quantity demanded for the watch when the price is $11.**

At a price of $11, the demand is for [ \ ] watches.

**d. Graph \( p = 16 - 1.25q \). Choose the correct graph below.**

**Graph Options:**

- **A.** Graph with an upward slope, from bottom left to top right.
- **B.** Graph with an upward slope, from bottom left to top right.
- **C.** Graph with a downward slope, from top left to bottom right.
- **D.** Graph with a downward slope, from top left to bottom right.

**Graph Analysis:**

- The graphs are labeled with \( p \) on the vertical axis and \( q \) on the horizontal axis.
- The correct graph depicts a linear function showing the relationship between price and quantity demanded, with a downward slope, indicating that as quantity increases, price decreases.

Select the graph that represents this linear relationship accordingly.
Transcribed Image Text:Suppose that the demand and price for a certain model of a youth wristwatch are related by the following equation: \[ p = D(q) = 16 - 1.25q \] where \( p \) is the price (in dollars) and \( q \) is the quantity demanded (in hundreds). Find the price at each level of demand. Answer parts a through d. **a. Find the price when the demand is 0 watches.** The price when the demand is 0 watches is $[ \ ] **b. Find the price when the demand is 800 watches.** The price when the demand is 800 watches is $[ \ ] **c. Find the quantity demanded for the watch when the price is $11.** At a price of $11, the demand is for [ \ ] watches. **d. Graph \( p = 16 - 1.25q \). Choose the correct graph below.** **Graph Options:** - **A.** Graph with an upward slope, from bottom left to top right. - **B.** Graph with an upward slope, from bottom left to top right. - **C.** Graph with a downward slope, from top left to bottom right. - **D.** Graph with a downward slope, from top left to bottom right. **Graph Analysis:** - The graphs are labeled with \( p \) on the vertical axis and \( q \) on the horizontal axis. - The correct graph depicts a linear function showing the relationship between price and quantity demanded, with a downward slope, indicating that as quantity increases, price decreases. Select the graph that represents this linear relationship accordingly.
Suppose the price and supply of the watch are related by the following equation:

\[ p = S(q) = 0.75q \]

where \( p \) is the price (in dollars) and \( q \) is the quantity supplied (in hundreds) of watches. Answer parts e through g.

**e. Find the quantity supplied at a price of $0.**

At a price of $0, the supply is \(\_\_\_\_\_\) watches.

**f. Find the quantity supplied at a price of $10.**

At a price of $10, the supply is about \(\_\_\_\_\_\) watches.  
(Round to the nearest whole number as needed.)

**g. Graph \( p = S(q) = 0.75q \) on the same axis used to graph \( p = 16 - 1.25q \) in part d. Choose the correct graph below.**

Graph Options:
- **A.** A graph with two lines crossing.
- **B.** A graph with two lines not crossing.
- **C.** Another non-crossing graph.
- **D.** A graph where the lines intersect around (10, 10).

**h. Given that the demand function is \( p = D(q) = 16 - 1.25q \) and that the supply function is \( p = S(q) = 0.75q \), find the equilibrium quantity and the equilibrium price.**

The equilibrium quantity is \(\_\_\_\_\_\) watches.

The equilibrium price is $ \(\_\_\_\_\_\).

**Graph Explanation:**

The graphs show \( p \) on the vertical axis and \( q \) on the horizontal axis. Each graph represents the intersection of the supply line (upward sloping) and the demand line (downward sloping). Graph **D** shows the intersection point, indicating the equilibrium.
Transcribed Image Text:Suppose the price and supply of the watch are related by the following equation: \[ p = S(q) = 0.75q \] where \( p \) is the price (in dollars) and \( q \) is the quantity supplied (in hundreds) of watches. Answer parts e through g. **e. Find the quantity supplied at a price of $0.** At a price of $0, the supply is \(\_\_\_\_\_\) watches. **f. Find the quantity supplied at a price of $10.** At a price of $10, the supply is about \(\_\_\_\_\_\) watches. (Round to the nearest whole number as needed.) **g. Graph \( p = S(q) = 0.75q \) on the same axis used to graph \( p = 16 - 1.25q \) in part d. Choose the correct graph below.** Graph Options: - **A.** A graph with two lines crossing. - **B.** A graph with two lines not crossing. - **C.** Another non-crossing graph. - **D.** A graph where the lines intersect around (10, 10). **h. Given that the demand function is \( p = D(q) = 16 - 1.25q \) and that the supply function is \( p = S(q) = 0.75q \), find the equilibrium quantity and the equilibrium price.** The equilibrium quantity is \(\_\_\_\_\_\) watches. The equilibrium price is $ \(\_\_\_\_\_\). **Graph Explanation:** The graphs show \( p \) on the vertical axis and \( q \) on the horizontal axis. Each graph represents the intersection of the supply line (upward sloping) and the demand line (downward sloping). Graph **D** shows the intersection point, indicating the equilibrium.
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