Answer
12
Step-by-step explanation
there is 15 of each color 3 take away 15 equals 12 red skittles left
2 students more were introducced in the class and each group had 8 people
If it is a slope formula I believe it is y= 4x-24
1 hour = 60 min
0.5 hours = 60 * 0.5 = 30 min.
Answer:

Step-by-step explanation:
So we have:

Distribute:

Combine like terms:

Subtract 12x from both sides:

Add 30 to both sides:

Divide both sides by -16:

And that's our answer :)