well you want to write an equation describing the rate of production of this whatever
so you produce 15 an hour regardless and you lose .5*x(t) per hour
x'(t) = 15 - .5*x(t)
Here's my problem:
A cell produces a metabolite at a constant rate orf 15 ng/hour. The metabolite is broken down at a rate proportional to the amount in the cell, .5 x(t).
How would I write a diff EQ that expresses this?