Problema Solution
An eMath factory has revenue which follow the formula R=-x^2+2400x-1,320,000,
Where x is the number of eMath sold each month. If the factory had
$80,000 in revenue last month and only has the resources to produce up to 1300
EMath in a single month, how many eMath were sold?
Answer provided by our tutors
the factory had $80,000 in revenue last month this means R = 80,000
-x^2+2400x-1,320,000 = 80000
only has the resources to produce up to 1300 EMath in a single month means x<=1300
-x^2+2400x-1320000 = 80000
by solving the quadratic equation we find the roots and consider the root that is <=1300
x = 1000
click here to see the step by step solution of the system of equations
there were 1000 eMath sold.