You go out to dinner and the bill comes to $35.51. how much should you tip if you want the tip to be 20.0% of the bill?

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

What shape would a molecule with two bound groups and two lone pairs have?