Consider the following equation: f′(a)=limh→0 (f(a+h)−f(a))/h let f(x)=3√x if a≠0, use the above formula to find f′(a)= show that f′(0) does not exist and that f has a vertical tangent line at (0,0)

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

Find the domain of the following expression: 1/(√x)-2

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?