What does 'barking up the wrong tree' mean?

How were computers in the 1950s and 1960s different from computers of today? they were much smaller. they were much faster. they cost less money they were bigger and slower.

Using apostrophes, hyphens, dashes, brackets, and parentheses correctly correct each error in the use of apostrophes, hyphens, dashes, brackets, and parentheses in the following sentences. you may need to add, delete, or change marks of punctuation. doesnt this turkey look oh, no, the cat must have gotten up on the counter!

The first step in making a mental model for a compare-and-contrast text is a. comparing the two things being described. b. finding important details in the text. c. contrasting the two things being described. d. connecting details to what is already known.