Consider the expression below. z+20 Which situations does the expression model? Answer Choices Kenny bought a t-shirt and a pair of jeans. The t-shirt was $20 less than the price of the jeans. If the jeans cost z dollars, how much did the t-shirt cost? Doris collected z items for the local food drive. Ed collected 20 more items than Doris. How many items did Ed collect for the food drive? Greg and Tom played a round of golf. Greg's score was 20 points higher than Tom's score. If Tom score was z points, what was Greg's score? The post office sells stamps by the sheet, and each sheet has 20 stamps. If Kathy purchased z sheets of stamps, how many stamps did she get?