Which graph best represents this system of equations and its solution . 8x-4y=-16 3x+15y=-6

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?

Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?