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tigry1 [53]
3 years ago
10

If the cost of making 20 copies is $1.30, how much will 1 copy cost?

Mathematics
1 answer:
Norma-Jean [14]3 years ago
8 0

Answer:

6,5

Step-by-step explanation:

1 dollar 30 cent = 130 cent

20 copies=130

1 copy=130/20=6,5

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Which graph represents the function of f(x) 9x^2 + 9x - 18 / 3x + 6
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Answer:

The graph in the attached figure

Step-by-step explanation:

we have

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Remember that in a quotient, the denominator cannot be equal to zero

so

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Simplify the expression

Using a graphing tool

The roots of the quadratic equation in the numerator are

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so

9x^{2}+9x-18=9(x+2)(x-1)

Simplify the denominator

3x+6=3(x+2)

substitute in the original expression

f(x)=\frac{9(x+2)(x-1)}{3(x+2)}

Simplify

f(x)=3(x-1)

f(x)=3x-3

Is the equation of a line

The y-intercept is the point (0,-3) (value of the function when x is equal to zero)

The x-intercept is the point (1,0) (value of x when the value of the function is equal to zero)

Graph the line, but remember that the value of  x cannot be equal to -2

The graph in the attached figure

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Step-by-step explanation:

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Step-by-step explanation:

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