Can someone please explain this to me? Thanks!

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42

Anew movie is released each year for 14 years to go along with a popular book series. each movie is 2 minutes longer than the last to go along with a plot twist. the first movie is 70 minutes long. use an arithmetic series formula to determine the total length of all 14 movies

Solve 2x − 1 = 11 for x using the change of base formula log base b of y equals log y over log b.