The temperature was 68 f .later that day the temperature was 82 f .how much does the temperature need to rise or fall to return to the original temperature of 68f a. fall 14 f b. fall 16 f c. rise 14 f d. rise 16 f

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?