Jalyn plans to sell algebra nation t-shirts as a fundraiser for a new scholarship initiative. the wholesale t-shirt company charges jalyn $10.00 a shirt for 75 shirts or less. if the number of t-shirts purchased is between 75 and 150 shirts, the company will lower its price to $7.50 per shirt. if jalyn purchases 150 or more shirts, the price will decrease to $6.00 per shirt. which of the following statements are true? select all that apply. can this situation be represented by a step function