Find the measure of exterior angle a. show equations and all work that leads to your answer.

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?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

38 points and brainliest plz answer question in word document