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After one day, 1000 copies of a CD are sold. Each of the following days, 100 more copies are sold. Write an equation in slope-intercept form to model the sales volume of the CD. Then use your equation to determine how many copies will be sold after 20 days.

I need standard from and the answer please

Sagot :

Answer:

y=100x+1000; 3,000 CDs after 20 days.

Step-by-step explanation:

Y=mx + b is your "slope-intercept form" standard equation, where "M" is your slope and "B" is your Y-intercept normally, but in this case it can be seen as your starting sales point.

1,000 copies are sold the first day. That is your Y intercept

100 copies sold there after so slope is seen like "100 copies sold / 1 day"

100/1 = 100x

so we end up with y=100x+1000 where X = the number of days that have passed and Y = number of CDs sold.

y= 100 ( 20) + 1,000

y = 2,000 + 1,000

y=3,000 CDs sold after 20 days.

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