Use the story graph of each problem to fill in the blanks of the following sentence frames below.

Mathematics

1 answer:

Alex777 [14]2 years ago

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I DONT KNOW WHAT THE ANSWER IS REALLY

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A clothing store offers customers a holiday sale of 20% off the price of x items. A customer then has an additional 15% off coup

aleksandr82 [10.1K]

Finding the equivalent multiplier, it is found that the function for the final price is:

P(x) = 0.68x.

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There is a holiday sale of 20% off the price of x, thus 0.8x is paid, as 1 - 0.2 = 0.8.

Additionally, there is a coupon of 15% off, thus, 0.85 of 0.8x is paid.
The equivalent multiplier is:

$0.85(0.8) = 0.68$

Thus, the function for the final price is:

$P(x) = 0.68x$

A similar problem is given at brainly.com/question/16999193

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2 years ago

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What is the equation of the line of the best fit for the following data? Round to the slope and y-intercept of the line to three

BigorU [14]

Answer:

D. $y=-0.927x+13.634$

Step-by-step explanation:

We graph the points on the graph. The graph is attached.

Let us take two points (1, 14) and (15, 1), and calculate the slope $m$ between them <em>(we choose these points because the line passing through them will be the best fit for all points) </em>

$m=\frac{14-1}{1-15} =\frac{13}{-14} =-0.9286$

Thus we have the equation

$y=-0.9286x+b$

Let us now calculate $b$ from the point $(1,14)$

$14=-0.9286(1)+b$

$b=14.9286$

So the equation we get is

$y=-0.9286x+14.9286$

Let us now turn to the choices given and see which choice is closest to our equation: we see that choice D. $y=-0.927x+13.634$ is the closest one, so we pick it.