Choose what you think the expressions below best represent within the context of the word problem. A man traveled a certain number of miles by automobile and then nine times as far by airplane. His total trip was 600 miles in length. How far did he travel by plane?

x represents miles by= airplane or automobile

9x represents miles by= airplane or automobile

In what layer of the sun is energy transfers between atoms

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

What macromolecule is produced during translation? a. carbohydrate b. rna c. dna d. protein