'Fell' means decreased which means you'd use subtraction You are simply taking away (subtracting) 4 from 92 The correct expression is C. 92 - 4 Just so you know, the temperature in the night would have been 88 degrees Fahrenheit.
Let x units be the length of the shortest side of the triangle. Perimeter of triangle = 2(x + 1) +x = 3x + 2 Perimeter of square = 4(x - 2) = 4x - 8 Equating the two expressions for perimeters, we get: 3x + 2 = 4x - 8 The solution is: x = 10
