Of 320 consumers polled, some purchase blu-ray movies, some only purchase movies on dvd, and some do both. if 300 people polled purchase blu-ray discs and 280 purchase dvds and blu-ray discs, how many people only buy dvds?a. 300 b. 20 c. 280 d. 40

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition?

When you answer this can you explain

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52