Daniel runs a boat rental business near a small river. he charges 10 per boat rental and averaged 32 rentals in a day. he estimated that for every $1.00 increase in rental price he can expect the business to lose two rentals per day. let x represent the number of $1.00 increases in rental price.

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?