Question

The monthly sale (in thousands of units) for the tth month after the

introduction of a product in the market is given by S = 135t/(t2 + 50). In
which earliest month would the sale (S) have been 9?
5th

Answer 1

What do you mean 9 and then you put on the bottom 5th but either way it is S=270t^2 +6750t