Question 387563
The profit, y, is to be at least $4000.00 or, algebraically, {{{y >= 4000}}}, but y = 0.02x-0.30, so substitute this into the above inequality to get:
{{{0.02x-0.30 >= 4000}}} Solve for x. Add 0.30 to both sides.
{{{0.02x >= 4000.30}}} Now divide both sides by 0.02
{{{x >= 200015}}}
So at least 200,015 items must be sold to earn a profit of at least $4,000.00