Mathematics, 25.02.2021 01:00, kayleigh88

Three friends are buying seashells at the gift shop on the beach. Melanie buys 2 seashells for $0.80. Rosi buys 5 seashells for $2.00. Carlos buys 4 seashells for $1.60. Use a graph to determine whether the number of seashells and the cost have a proportional relationship. If so, what is the constant of proportionality and what does it mean?

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Three friends are buying seashells at the gift shop on the beach. Melanie buys 2 seashells for $0.8...