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Mathematics, 11.12.2020 01:30 morgans53005
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. (20 points)
a
y = 8x
b
y = one-eighth x
c
y = 9x
d
y = one-ninth x
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