People assigned to assemble circuit boards for a computer manufacturing company undergo on-the-job training. From past experience,

Question:

People assigned to assemble circuit boards for a computer manufacturing company undergo on-the-job training. From past experience, the learning curve for the average employee is given by
N = 40(1 - e-0.l2t)
where N is the number of boards assembled per day after / days of training. Graph this function for 0 ≤ t ≤ 30. What is the maximum number of boards an average employee can be expected to produce in 1 day?