Luke bought a pair of jeans originally priced at $69.00. the jeans have been marked down 25%, and a sign posted on the rack where he found them says, “10% additional discount given at register.” which calculation will give the price that luke will pay for the jeans, not including sales tax?
a. 69(0.35)
b. (0.65)
c. 69(0.75)(0.90)
d. 69(0.25)(0.10)

How do you find the area of a triangle

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?

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.