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

Equation:

2900 CDs will be sold after 20 days.

Step-by-step explanation:

See image.

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )