2 years ago

( PLEASE HELP) The ferry family rented 50 chairs for $150. Which expression can be used to find the cost per chair?

Mathematics

2 answers:

EastWind [94]2 years ago

8 0

Answer:

Step-by-step explanation:

jasenka [17]2 years ago

4 0

$150/50 the answer is B

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Step-by-step explanation:

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21. Randy owns a computer store. In 1990, he sold 150 monitors. In 2000, he sold 900

lutik1710 [3]

Answer:

$y=75x+150$

Step-by-step explanation:

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$x$ is the number of years since 1990.

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Thus, the two points are $(0,150)$ and $(10,900)$ .

The slope of a line with points $(x_{1},y_{1})$ and $(x_{2},y_{2})$ is given as:

Slope, $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

For the points $(0,150)$ and $(10,900)$ , the slope is given as:

Slope, $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\ m=\frac{900-150}{10-0}\\ m=75$

Now, the y-intercept is the point where $x=0$ . So, the point $(0,150)$ has $x$ value as 0.

So, the y-intercept is 150.

Equation of a line in slope-intercept form is given as:

$y=mx+b$

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Here, $m=75$ and $b=150$ .

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2 years ago

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Evgesh-ka [11]

Answer: b = 2a

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<u>Original equation</u>

a = (1/2) b

<u>Multiply 2 on both sides</u>

a * 2 = (1/2) b * 2

$\Large\boxed{b=2a}$

Hope this helps!! :)

Please let me know if you have any quesitons

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