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Mathematics

1 answer:

Naddika [18.5K]2 years ago

3 0

Answer:

c ( x - 5 ) ( x + 3 ) ( x - 1 )

Step-by-step explanation:

if you multiply the first two brackets you would get x² - 2 - 15, for example x × x will give you x² x × 5 will give you 5x and so on ( basically you need to use the FOIL method )

to get x² + 2x - 3 multiply the second and third brackets with each other just like how you did for the first one.

I'm not sure if that's what you wanted...

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Step-by-step explanation:

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2 years ago

You go to an arcade and purchase a card with game credits. After playing 5 games you have 33 credits left. You play 4 more games

Amanda [17]

Answer:

$y=-3x+48$

Step-by-step explanation:

We will use slope-intercept form of equation to write our equation. The equation of a line in slope-intercept form is: $y=mx+b$ , where m= Slope of the line, b= y-intercept.

To write the equation that represents the number of credits y on the cards after x games, we will find slope of our line.

We have been given that after playing 5 games we have 33 credits left. We play 4 more games and we have 21 credits left. So our points will be (5,33) and (9,21).

Let us substitute coordinates of our both given points in slope formula: $m=\frac{y_2-y_1}{x_2-x_1}$ ,