Calculus Homework Assignment

There is a total of 9 questions that I need help with. 4 that I partially answered and 5 that I need help with understanding how to complete the problem. One has to do with finding the equation of a tangent line, one has to do with l’Hospital’s rule, one has to do with approximating cost, one has to do with velocity, and multiple have to do with marginal cost/profit/revenue. If you need more time to given me explainations that’s okay, I just need the answer within the time limit.