A school council is selling raffle tickets to help raise funds for improvements to the school library. The council earns \($1\) profit for the first ticket sold, but \($5\) profit for every ticket sold after that.
\(P=5n-4\)
represents the relationship between the profit, \(P\), and the number of tickets sold, \(n\).
On the first day of sales, the school council made a profit of \($126\). How many tickets did they sell?
Solution
If the school council has a profit of \($126\), then \(P=126\).
Substitute into the equation:
\(126=5n-4\)
What value of \(n\) will make this equation true?
How might you find the value of \(n\) without using a table of values or a graph?