X+7=8 solve this one step equations

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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?

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost