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sesenic [268]
2 years ago
9

Someone PLEASEEEEE HELP!! :(

Mathematics
1 answer:
Ratling [72]2 years ago
3 0

The equation that represents the line that passes through the points is y-1 = \frac{5}{4}(x-1). The correct option is D. y-1 = \frac{5}{4}(x-1)

<h3>Equation of a line </h3>

From the question, we are to determine the equation of the line that passes through the given points

Using the formula

\frac{y-y_{1} }{x-x_{1}} =\frac{y_{2}-y_{1} }{x_{2}-x_{1}}

From the give information,

x_{1} = 1 \\y_{1} = 1\\{x_{2} =5

y_{2} = 6\\

Putting the parameters into the formula,

\frac{y-1 }{x-1} =\frac{6-1}{5-1}

\frac{y-1 }{x-1} =\frac{5}{4}

∴ y-1 = \frac{5}{4}(x-1)

Hence, the equation that represents the line that passes through the points is y-1 = \frac{5}{4}(x-1). The correct option is D. y-1 = \frac{5}{4}(x-1)

Learn more on Equation of a line here: brainly.com/question/12079926

#SPJ1

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  • A(n)=75.89-0.89n
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Step-by-step explanation:

The worth of the card =$75

The value of the card decreases after each music purchase forming a sequence:

75,74.11,73.22,72.33...

Now,

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We see that the sequence forms an arithmetic sequence:

Where the first term, a is 75

Common difference, d=-0.89

We want to write an equation to define A(n), the amount of money on the gift card after n song purchases.

For an arithmetic sequence,the nth term A(n)=a+(n-1)d

Therefore:

The amount of money on the gift card after n song purchases.

A(n)=75-0.89(n-1)

A(n)=75+0.89-0.89n

A(n)=75.89-0.89n

To find out how many songs can Josh purchase with this card only, we take our nth term A(n) of the sequence to be 0 and solve for n.

A(n)=75.89-0.89n

0=75.89-0.89n

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Divide both sides by 0.89

n=85.3

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Therefore, Josh can purchase 85 songs with this card only

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