Does 4(2x-5) equal 8x-5 or 8x-20? explain

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 polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

100 points? me its important ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️