The line models the temperature on a certain winter day since sunrise what is the y-intercept of the line? What does the y-intercept represent

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Find the amount in a continuously compounded account for the given condition. principal: $1000, annual interest rate: 4.8%, time: 2 yr

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)