2.1 Exercises

58

Chapter 2 The Mathematics of Consumption

2.1 Exercises

Groceries In Exercises 1? 4, find the unit price of the item. (See Example 1.)

1. Peanuts

2. Ramen

3. Grape juice

4. Ice cream

Dollars per 100 pounds

1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

$2.79 for 16 oz

$4.29 for 72 oz

$3.39 for 64 fl oz

Strawberries In Exercises 5 and 6, use the graph. (See Example 2.)

Prices Paid to Growers for 100 Pounds of Strawberries

110 105 100

95 90 85 80 75 70 65 60

0

Year

$4.49 for 1.5 qt

5. Strawberry growers are paid for every 100 pounds of strawberries produced. a. In 2009, how much did a grower earn for a pound of strawberries? b. In 2009, the price of a 16-ounce container of strawberries was $2.57. What percent of the price did the grower earn?

6. In 1991, the average retail price of a pound of strawberries was $1.32. a. In 1991, how much did a grower earn for a pound of strawberries? b. In 1991, what percent of the average retail price did the grower earn? c. Compare the percent in part (b) with the percent from Exercise 5. Did growers earn a larger portion of the average retail price in 1991 or in 2009? Explain your reasoning.

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