Helsea is sitting 8 feet from the foot of a tree. From where she is sitting, the angle of elevation of her line of sight to the top of the tree is 36°. If her line of sight starts 2.5 feet above ground, how tall is the tree, to the nearest foot? A) 9
B) 10
C)12
D) 21

X+ y = 5 ; x - y =3 solve using linear combination

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

Which of the following will form the composite function?