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4 years ago

A yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks.

Mathematics

2 answers:

inessss [21]4 years ago

6 0

Answer:

y = 0.012x + 0.65

Step-by-step explanation:

In order to confirm which equation gives the cost of y in terms of the number of pages x, each and every equation needs to be checked out.

Assuming y = 1.25 and x = 50 (as given in question)

First Equation:

y = 0.012x + 0.65

y = 0.012(50) + 0.65

y = 0.6 + 0.65

y = 1.25

Second Equation:

y = 0.012x + 1.25

y = 0.012(50) + 1.25

y = 0.6 + 1.25

y = 1.85

Third Equation:

y = 0.012x + 49.985

y = 0.012(50) + 49.985

y = 0.6 + 49.985

y = 55.985

Fourth Equation:

y = 83.3x + 0.65

y = 83.3(50) + 0.65

y = 4165 + 0.65

y = 4165.65

Hence, only the first equation is resulting in the cost y in terms of the number of pages x. Therefore, is the correct one.

Keith_Richards [23]4 years ago

4 0

Using the first X and Y value replace the values in the equation and see which one works:

1.25 = 0.012(50) + 0.65

0.012(5) = 0.6 +0.65 = 1.25

The first equation works

Now try the second set: of values to check:

1.85 = 0.012(100) +0.65

0.012*100 = 1.20 + 0.65 = 1.85

The first equation is the correct one.

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jeyben [28]

Answer:

See explanation below for further details.

Step-by-step explanation:

A rational consist of two real numbers such that:

$\frac{a}{b} =c$

If c is a polynomial with a certain grade, then, both the numerator and the denominator must be also polynomials and the grade of the numerator must be greater than denominator.

If c is linear function, that is, a first order polynomial, then a must be a (n+1)-th polynomial and b must be a n-th polynomial.

Example:

If $a = x^{2}$ and $b = x$ , then:

$c = \frac{x^{2}}{x}$

$c = x$

If c is a quadratic function, that is, a second order polynomial, then a must be a (n+1)-th polynomial and b must be a n-th polynomial.

Example

If $a = 3\cdot x^{3}$ and $b = x$ , then:

$c = \frac{3\cdot x^{3}}{x}$

$c = 3\cdot x^{2}$

But if c is an exponential, both the numerator and the denominator must be therefore exponential function and grade of each exponential function must different to the other.

Example

If $a = 10^{2x}$ and $b = 3\cdot 10^x$ , then:

$c = \frac{10^{2\cdot x}}{3\cdot 10^{x}}$

$c = \frac{1}{3}\cdot 10^{2\cdot x -x}$

$c = \frac{1}{3}\cdot 10^x$

Otherwise, c would be equal to a constant function, that is, a polynomial with a grade 0.

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$c = \frac{5\cdot e^{x}}{-3\cdot e^{x}}$

$c = -\frac{5}{3}$

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3 years ago

Try It!

Wittaler [7]

Answer:

91.46m

Step-by-step explanation:

The length of 100 yard football field in meters.

From the dimension given,

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