I need help again- for like the 10th time, I’ll give BRAINLIEST for the correct answer :) 2 or more answers :D

Which expression is equivalent to 2x^2+7x+4?

Which choice represents the sample space ,s for this event

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?