Find the lim [(ln(x+5) - ln5) / x ] as x approaches 0

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Math i have no idea how to do a and b

Factor the polynomial expression x6 – x3 – 20