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marissa [1.9K]
3 years ago
13

Andrew goes to a store an buys an item that costs xx dollars. He has a coupon for 35% off, and then a 8% tax is added to the dis

counted price. Write an expression in terms of xx that represents the total amount that Andrew paid at the register
Mathematics
1 answer:
ANTONII [103]3 years ago
7 0

Answer:

xx(0.65) + xx(0.08)

Step-by-step explanation:

First step is to find the discounted price. Finding 35% less than the original xx is the same as finding 65% of it, so we multiply by 0.65. Once this is completed we need to find 8% more than that. So we add 8% of xx, which is the same as multiplying by 0.08. Hope this helps :)

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f(x) = a*c^x

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<em />

<h2>Solving the Question</h2>

Identify the horizontal asymptote

In this question, it appears to be x = 0.

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The y-intercept is the value of <em>y</em> at which the graph appears to cross the y-axis. In this graph, it appears to be 100. This is our <em>a</em> value. Plug this into f(x) = a*c^x:

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Plug <em>c</em> back into our original equation:

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<h2>Answer</h2>

f(x) = 100*(\dfrac{1}{2})^x

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We got an equation:                                  x-75=1\frac{1}2\cdot\frac{x-15}{4}

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