Subtract the product of x square - 5 x + 4 and 2 x square - 11 x + 6 from the product of 3 x square - 7 x + 5 and 2 X square + 3 x -8

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?