Barry has been watching the geese that live in his neighborhood. The number of geese changes each week. n | f(n)
1:56
2:28
3:14
4:7

Which function best shows the relationship between n and f(n)?
A) f(n) = 28(0.5)^n
B) f(n) = 56(0.5)^n−1
C) f(n) = 56(0.5)^n
D) f(n) = 112(0.5)^n−1

What percent of the circle below is shaded?

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

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?