Suppose a 95% confidence interval for a population mean was found to be (60, 80). can we find the sample mean? choose yes/no and justify your answer.

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?

Can someone me and explain..will award brainlest!