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julia-pushkina [17]
3 years ago
15

Madelyn goes out to lunch. The bill, before tax and tip, was $9.45. A sales tax

Mathematics
1 answer:
Sholpan [36]3 years ago
5 0
$11.34

I think you meant tenth where you said “nearest cent”, so it’s $11.30.
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user100 [1]
When x=-1: \quad (-1)y=-4\qquad\to\qquad y=4\)

Ok that gives us a little more information.
If we implicitly differentiate with respect to t, from the very start, then we can apply our product rule, ya?

x'y+xy'=0

The right side is zero, derivative of a constant is zero.
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From here, plug in all the stuff you know:
y' = -3
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and solve for x'.

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Answer:

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Step-by-step explanation:

we know that

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