Please Please Pleasee help me out with this question, i have a timed test! tysm!!

Milan will rent a car for a day. The rental company offers two pricing options: Option A and Option B. For each pricing option, cost (in dollars) depends on miles driven, as shown below.
(a) If Milan drives the rental car 150 miles, which option costs more?
Option A or Option B
How much more does it cost than the other option? __
(b) For what number of miles driven do the two options cost the same? __
If Milan drives less than this amount, which option costs less?
Option A or Option B

Need this asap if anyone can i would be very grateful. if you could show workings that would really

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?

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion