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anygoal [31]
3 years ago
6

A city's sales tax is 0.07. Write this decimal as a fraction and tell how many cents of tax are on each dollar.

Mathematics
1 answer:
leonid [27]3 years ago
6 0
To transform decimal to fraction its easy to read decimal. So
0.07 is seven hundredths. Now we know that in the nominator should be seven and in the denominator 100.
So
0.07= \frac{7}{100}. - the result
 
Now we have to multiply 0.07 by dollar.
0.07*1$=0.07$ = 7 cents - the result
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The interval of the decreasing function is (-∞ , -1) ⇒ g(x)

The interval of the decreasing function is (-∞ , 0) ⇒ f(x)

Step-by-step explanation:

* Lets explain how to solve it

- Decreasing function means a function with a graph that moves

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- For example, any line with a negative slope is decreasing function

- Lets look to the attached graph to understand the meaning of the

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∵ f(x) = IxI ⇒ green graph

∵ g(x) = Ix + 1I - 7 ⇒ purple graph

- From the graph f(x) translated 1 unit to the left and 7 units down to

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- The domains of f(x) and g(x) are all real numbers {x : x ∈ R}

- The range of f(x) is {y : y ≥ 0}

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# For f(x)

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- The slope of the purple line from (-∞ , -1) is negative

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∵ The line with negative slope represent decreasing function

∴ The interval of the decreasing function is (-∞ , -1) ⇒ g(x)

∴ The interval of the decreasing function is (-∞ , 0) ⇒ f(x)

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