Mathematics, 28.08.2019 12:10, lizredrose5

Mark bought gifts for his friends, and each gift cost $9. let y represent the total cost and x represent the number of gifts. write an equation to represent the proportional relationship between the total cost and the number of gifts he bought.
y = 8x
y = one-eighth x
y = 9x
y = one-ninthx

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Mark bought gifts for his friends, and each gift cost $9. let y represent the total cost and x repre...