6. (06.03 MC) Which of the following best describes the expression 12(x + 3)? (5 points) The product of a constant factor 12 and a 2-term factor x + 3 The sum of a constant factor 12 and a 2-term factor x + 3 The sum of constant factors 12 and x + 3 The product of constant factors 12 and x + 3

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?