Please help me on thisss plsss

Which facts are true for the graph of the function below? check all that apply. f(x) = log8 x. (30 points pls )

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°