Dwayne grew 16 plants with 8 seed packs. How many seed packets does Dwayne need to have a total of 18 plants in his backyard? Assume the relationship is directly proportional.

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?