Answer:
y= 250 - 2x
Step-by-step explanation:
She spends $2 per bottle, which is my it's 2x.
She has a total of 250, and she spends $2 per bottle, so you subtract 2x from 250, which leaves the equation at y = 250 - 2x
The solution to the problem is as follows:
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the genaral term is 5Cr(-1)^r 2^r x^(5-2r)
and so need 5-2r = -1 => r = 3
Coeff is then 5C3 (-1)^3 2^3 = -80
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Percent of Change:
Difference/Original
(20-16)/16 = 4/16 = 1/4 = 25% increase
2.873 ≈2.9 (nearest tenth)
It is going up by 5 so i believe your answer would be 57
