Use the formula for the general term (the nth term) of a geometric sequence to find the indicated term of the following sequence with the given first term, a1, and common ratio, r. find a8 when a1=5, and r=3

Simplify the expression 10/11(22z) + (a+5) -1

Ineed to know the answer to this algebra question.

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?