Answer:
7.6(<em>a</em>+<em>b</em>) A.
8.205-2<em>d</em> D.
9. 0.05<em>n</em>+0.10<em>d</em>+0.25<em>q</em>=10 B.
If there is a solution(s) they will be the point(s) of intersection on the graph.
If there are infinite solutions there will be only one line or curve.
If the lines are parallel there is no solution.
Sarah's expression is correct because for every hour you get 9 dollars so 9(1) is 9 dollars for one hour. Then for two Hours it would be 9(2) which equals 18.
The answer to 0-(-41)-28 is 13.
Hope this helps! (:
