Explain in word form.
2 answers:
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Answer:
Eric's expression is :
and Andrea's is :
In Eric's expression, 20 represents the initial amount of substance with which he has started the experiment. is the amount of substance left after each time period (in this case, each week).The variable w in this case represents the number of weeks.
Andrea's expression can be written as :
The one outside of parentheses represents the initial amount of the substance. The one inside of parentheses represents 100% of the original amount of the substance. 0.5 represents the 50% of the substance that is lost each time period. The variable w in this case represents the number of weeks.
The solution for the system of equations are:
Attached is the graph of lines y=3x-2 and y=-2x+5.
Attached is the graph of lines y=3x-2 and y=-2x+5.