So in your question where the P(t) is the value of the performance level of someone learning skill as a function of the training time T. The ask is to estimate the maximum number of units per minute to each worker is capable of processing and the answer is david 15.125
Y=4/3 because if 3 goes to rhs is becomes divided by the number on the rhs so answer is 4/3
-5= -5x-10
Plus 10 from both sides
5=-5x
X = -1