1. Suppose you belong to a tennis club that has a monthly fee of $100 and a charge of $5 per hour to play tennis.

a. Using Figure as a model, prepare a table and draw a curve to show the relationship between the hours of tennis (on the horizontal axis) and the monthly club bill (on the vertical axis). For the table and graph, use 5, 10, 15, and 20 hours of tennis.

b. The slope of the curve is______ per _________.
c. Suppose you start with 10 hours of tennis and then decide to increase your tennis time by 3 hours. On your curve, show the initial point and the new point. By how much will your monthly bill increase?
d. Suppose you start with 10 hours and then decide to spend an additional $30 on tennis. On your curve, show the initial point and the new point. How many additional hours can you get?
2. The following graph shows the relationship between the number of Frisbees produced and the cost of production. The vertical intercept is $ ______, and the slope of the curve is $ per Frisbee. Point b shows that the cost of producing Frisbees is $ ______. The cost of producing 15 Frisbees is $ ______.

3. Suppose you have $120 to spend on CDs and movies. The price of a CD is $12, and the price of a movie is $6.
a. Using Figure as a model, prepare a table and draw a curve to show the relationship between the number of CDs (on the horizontal axis) and movies (on the vertical axis) you can afford to buy.

b. The slope of the curve is _______ per________.
4. You manage Gofer Delivery Service. You rent a truck for $50 per day, and each delivery takes an hour of labor time. The hourly wage is $8.
a. Draw a curve showing the relationship between the number of deliveries (on the horizontal axis) and your total cost (on the vertical axis). Draw the curve for between 0 and 20 deliveries.
b. The slope of the cost curve is ______ per______.
c. To draw the curve, what variables are held fixed?
d. A change in ______ would cause a movement upward along the curve.
e. Changes in ______ would cause the entire curve to shift upward.
5. A change in a variable measured on an axis of a graph causes movement _______ a curve, while a change in a relevant variable that is not measured on an axis_______ the curve.
6. Compute the percentage changes for the following:

7. Compute the new values for the following changes:

8. Suppose the price of an mp3 player decreases from $60 to $40. Using the midpoint approach, the percentage change in price is ____. Using the initial value approach, the percentage change in priceis____

Transcribed Image Text:

$280 200 と80-200-120 120--- 80 . Slope= -8 10 10 20-10 40 0 10 20 30 Hours worked per week $1 40 100 60 t-- 10 20 30 Frisbees per day 201 120 10 20 30 CDs Number of CDs Purchased Number of Songs Downloaded Point on the Graph 10 20 30 360 240 120 Initial Value New Value Percentage Change 10 100 50 98 53 Initial Value Percentage Change New Value 12% 15 100 50 20