You buy hats for $5 and sell them for $20 each. what dose the graph of profits as a function of the number of the hats sold look like

In the diagram of circle a what is m

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Is this a polynomial function? i need to know asap