Ineed asap
i’m so stumped on this one mainly cause i’m not as intelligent

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

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3