Can anyone me plz me i will mark the fist one to answer as birillet and answer a question you ask me i will try andfiger it out

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

What is (28 + 7 + 6 + 3) x 1/2 show your work

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)