The new mean age will be greater than 14.2 years because the teacher is older than the previous mean.
2y+18=42
2y=24
y=12
Hope this helps!
B I think if I’m wrong I sooooo sorry
The first 4 is ten times as great at the other.
The first 4 is in the thousands place, which means that it is equal to 4,000. The next 4 is in the hundreds place, which makes it worth 400. If you divide the first by the second, you get how much greater it is.
4,000/400 = 10 times.
Hi ! Does the question include an image?
