PLEASE HELP PLEASEEE The histogram shows the number of minutes that users waited to register for classes on a university's online system. Suppose 5 more users call and each waits exactly 45 minutes. Which color bar(s) will be affected by the new data?

B) purple only Eliminate C) yellow only D) blue and yellow

explain your reasoning

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?