ASSIGNMENT
1. The table shows the population of Washington, D.C., every 10 years from 1950 to 2000.
a. Make a data display that shows the population for those years.
b. In which year did the population decrease the most from 10 years earlier, and what was the approximate percent of change?
c. Can you conclude from the table that the population of Washington, D.C., has decreased every year since 1950? Explain your reasoning.
Year : Population 1950 : 802,000 1960 : 764,000 : 1970 :757,000 1980 :638,000 1990: 607,000 2000: 572,000
2. A store sells granola bars in boxes of 8 and 20. A box of 8 bars costs $3.12, and a box of 20 bars costs $7.00.
a. List all the possible ways that you can buy exactly 80 granola bars.
b. How should you buy exactly 80 granola bars if you want to spend the least amount of money? Explain your reasoning.
