I really need help with this math problem

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

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?

Aright cylinder has a diameter of 8 m and a height of 6m. what is the volume of the cylinder