A farmer has chickens, sheep and horses. There are 154 animals and 156 total legs. The number of sheep equals twice the number of chickens. How many of each type of animal does he have?

Suppose the probability of selling a car today is 0.28. find the odds against selling a car today.

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?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10