The equation is 30,000+200x=80,000. X is the number of sales.
A single drink would cost be $1.55. This is because:
13 + 4x - 6 = 13.20.
(13.20 - 13 + 6) = 6.20.
6.20 / 4 = 1.55
Hope this helped.
<span>The result is 2x^2 - 3x + 2 .</span>
the first rate is 1.25 ur on your own for the rest