Will give brainliest

what is the fifth term of the recursive formula an=2an-1 with the first term of 3?

a.
7
b.
17
c.
33
d.
65

With finding limits of multi variable !

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Campus rentals rents 2 and 3 bedrooms apartments for $700 ans $900 a month respectively. last month they had six vacant apartments and reported $4600 in lost rent. how many of each type of apartment were vacant?