This year 0.3 of the x students at
mega middle school are in 7th grade.
there are 294 students in 7th grade.

I am sorry but what did you want the question to be?

Step-by-step explanation:

I can answer you in the comments below but I’m not sure what you’re asking

other answer is correct. i had used the radius of the radius somehow. a website:

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %