Which of the following examples best represents the use of an interval scale? a. ranking the participants of a race based on their performance b. assessing students' ratings of their professors' performance on a five-point scale ranging from poor to excellent c. measuring the number of boxes of cookies sold by scouts on the west side of a town versus those sold on the east side of the town d. naming the different brands of cars seen in a school's parking lot

Which of the following expressions is equal to 2x^2+8

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?

Nikolas calculated the volume of the prism. his work is shown below.