The union charge $2 per raffle ticket. The only expenses the uion will incur are the cost of raffle tickets estimated at $0.60 per ticket and the cost of the Grand Prize,a lap top worth $875.
Write: A linera cost function
A Linera revenue function

Let x be the number of tickets, and y be the net revenue.

The 1st revenue is 2x. (the price for the number of tickets sold)
The 1st expense is 0.6x (the price for the number of tickets bought)
The 2nd expense is 875 and is fixed.

Total revenue = 2x
Total expenses = 0.6x + 875

The net revenue is the revenues, minus the expenses.

Can you now write the function?