Ranger simplified this expression. 3(2.7x 5) – 2(4x – 1.6) What was Ranger’s simplified expression? 0.1x 18.2 –16.1x 11.8 16x – 18.2 –0.1x 11.8

The authors use the word “backbone” in lines 3 and 39 to indicate that

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When looking at research about instructional strategies, make sure the research is a. from peer-reviewed studies. b. approved by state and federal government organizations. c. online and easily accessible. d. about the same topic you're interested in.