Mathematics, 12.11.2019 19:31, svarner2001

Janet, rose, and tanya buy postcards from their favorite souvenir shop. janet buys 3 postcards for & 1.05. rose buys 5 postcards for $1.75. tanya buys 8 postcards for $2.80. are the cost, y, in dollars and the number of postcards, x, proportional? explain. write an equation to represent this relationship.

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Janet, rose, and tanya buy postcards from their favorite souvenir shop. janet buys 3 postcards for &...