Of the trains that recently arrived at Bluepoint Station, 10 were on time and 5 were late. Considering this data, how many of the next 9 trains would you expect to be on time? All I'm getting it 4.5

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? a) 6 b) 8 c) 14 d) 20

For what value of x does 4x = (1/8) x + 5?

Witch represents the inverse of the function f(x)=1/4x-12