Answer:
graph b
Step-by-step explanation:
any graph with a filled in circle is automatically out and it has to be b cause its less than x
Let the amount of shells collected by Aaron be

and the amount of shells collected by Maria be

respectively. Then the following system of equations should be solved:

First of all, express

out of first equation:

Then, replace

in second equation with found expression and solve it:



Finally, replace

in first equation with found value and solve it too:


So, Aaron has found
7 shells while Maria has found
21.
In fraction, it would be:
-107474/10000
Answer:
boxes, 3,4,7,9,10,11 and 13 are the ones to be shaded.
hope this helps (:
Answer:
(x-2),(x+1)
Step-by-step explanation: