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Answer: Y = e^2
The steps are shown in the picture!
Let x be the amount each friend pays .
There are five friends contributing ,so 5x will be the total money collected .
It needs to equal the price plus the tax, 210 + 15 = 225
So the equation becomes,
5x = 225
dividing right side by 5, we have
x = 225/5 = 45
Answer: So each frien pays $45.