Melanie has decided to run for presient of her science club. She would like to purchase colorful rubber bracelets that say, "Melanie for President!" She plans to pass out these colorful bracelets at the next meeting. There are twenty bracelets in each package. Each bracelet costs $3.50. How much will Melanie have to pay if she purchases two pcages of colorful bracelets?

Melanie will have to pay $7 for each package of colorful bracelets. Therefore, for two packages of colorful bracelets, she will have to pay 2 x $7 = $14.