For gym class, gracie keeps a record of how many miles she runs. for the first half of the semester she runs 23 miles, and her grand total at the end of the semester is 50 miles. write an equation to model this situation. a) 23 + x = 50 b) x - 23 = 50 c) 23 - x = 50 d) x - 50 = 23

Nour and rana are shopping for a christmas tree. they are deciding between 2 22 different types of trees (real and fake) and 4 44 colors for the ornaments (white, silver, gold, and purple). they each created a display to represent the sample space of randomly picking a type of tree and a color for the ornaments. whose display correctly represents the sample space?