If Keiko buys 1 pound of candy, she will spend $5. If she buys 2 pounds of candy, she will spend $10. If she buys 3 pounds of candy, she will spend $15. If she buys 4 pounds of candy, she will spend $20. If she buys 5 pounds of candy, she will spend $25. If she buys 6 pounds of candy, she will spend $30. If she buys 7 pounds of candy, she will spend $35. If she buys 8 pounds of candy, she will spend $40. Therefore, the possible amounts she will spend on candy are $5, $10, $15, $20, $25, $30, $35, and $40.