I disagree with the student because the slope is the rate of change. The slope would be 10 because the rocks are increasing by 10 every month.
42 inches of wire will cost 168 cents
Look at the pic to see how to set up the proportion.
Answer:
The answer will be 30cm
Because 40 divided by 4 is 10 and times it by 3
ANSWER
x coordinates of the intersection points
EXPLANATION
The given system of equations is:


We want to use the graph of these functions to solve

The point of the intersection of the graph gives the solution to the simultaneous equation above.
Hence the x-coordinates of the intersection points gives the solution set of

The last choice is correct.
Answer:
(4x + 12 ) - ( -8 ) =
4x + 20
Explanation:
Just add them up and form a equation ( this is for the second one )