1)what are the first five terms of the sequence given by the formula an=4n+1 ?
a. 1,5 ,9,13,17
b. 9,13,17,21,25
c. 5,9,13,17,21
d. 4,8,12,16,20
2)write a recursive definition for the sequence 8,6,4,2
a. a1=8, an=an-1-2
b. a1=2, an=an-1+6
c. a1=8,an=an-1+2
d. a1=2, an=an-1+8

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal